Regulatory filings revealed that JANA, a hedge fund with $5.5 billion in assets, picked up some 14 million shares of Supervalu in the quarter ended March 31. For Laffont’s $9.5 billion firm, however, it was a different story, as the hedge fund dumped all of its roughly 10 million shares.

Leon Cooperman’s $9 billion Omega Advisors also jumped into Supervalu, opening a 6.87 million-share position, a filing revealed.

Hedge fund managers and other large investment firms on Wednesday filed so-called 13-F reports with the U.S. Securities and Exchange Commission, shedding some light on how they traded in U.S. stocks in the first quarter.

The filings also showed just how much Apple Inc’s star dimmed in the first quarter.

Chase Coleman’s $12 billion Tiger Global Management sold 790,000 Apple shares in the quarter, while Cliff Asness’s $80 billion AQR Capital Management sold about 150,000 shares.

But the regulatory filings only tell a small portion of the story because they offer no explanation for a fund’s buying and selling of U.S. stocks. The filings also don’t require money managers to disclose short positions, or bets a stock will decline in price.

So there is no way of knowing what motivated Coatue to exit shares of Supervalu, which doubled in price in the first quarter, after the grocery chain struck a deal in January to sell some of its supermarket chains to Cerberus Capital Management for $3.3 billion. Similarly, it is not clear what prompted JANA and Omega to jump into the stock, but it could be the funds see the chain as a turnaround story.

The 13-F filings then are an imperfect look into the stock trading strategy of large funds. It is also important to note that in the 45 days since the first quarter ended, some of the reported stock positions may have changed.

Jeffrey Gundlach, a co-founder of DoubleLine Capital, a $60 billion bond shop that is moving into equity investing, said he never looks at other manager’s 13-F filings.

With that caveat, here is how big money managers traded in the first quarter, broken down by sectors and actively traded stocks:

APPLE

Appaloosa Management, a $14 billion hedge fund led by David Tepper, reduced its stake in Apple by 40 percent to 540,000 shares.

Coatue Management added 562,546 shares of Apple, lifting its total stake in the iPhone and iPad manufacturer to 1.2 million shares.

OTHER TECH

Farallon Capital Management, a $20 billion hedge funded led by Andrew Spokes, took a new 2.46 million-share stake in computer manufacturer Dell Inc, which is embroiled in a contentious corporate buyout.

INTERNET

JANA, which has a reputation for shareholder activism, opened a new 25.5 million-share stake in online social gaming company Zynga Inc.

JANA also opened a 21.9 million-share position in online coupon company Groupon.

Passport Capital, a $3.7 billion fund led by John Burbank, opened up a 2.2 million-share position in Yahoo Inc. But Tiger Global sold 14 million shares.

FINANCIALS

Appaloosa reduced its holdings in several financial stocks. The hedge fund, for instance, cut its stake in American International Group Inc by 29 percent to 4.3 million shares. Meanwhile, Seth Klarman’s $28 billion Baupost Group increased its stake in AIG by 70 percent to 11.9 million shares.

Farallon raised its stake in American Express Co by 2.1 million shares.

TELECOMMUNICATIONS

Eton Park Capital Management, a $19.4 billion fund led by Eric Mindich, reduced its stake in Sprint Nextel Corp to 18.5 million shares from 23.1 million.

HEALTH

OMEGA sold all of its shares of health insurers Humana Inc and Wellpoint Inc.

(Reporting by Samuel Forgione, Svea Herbst-Bayliss, Aaron Pressman, Rodrigo Campos, Emily Flitter, Manuela Badawy and Tim McLaughlin; Compiled by Matthew Goldstein; Editing by Steve Orlofsky)

Regulatory filings on Tuesday revealed that JANA, a hedge
fund with $5.5 billion in assets, picked up some 14 million
shares of Supervalu in the quarter ended March 31. For Laffont’s
$9.5 billion firm, however, it was a different story, as the
hedge fund dumped all of its roughly 10 million shares.

In the $2.2 trillion hedge fund industry it is not uncommon
for managers to move in and out of stocks. On Tuesday, hedge
fund managers and other large investment firms filed so-called
13-F reports with the U.S. Securities and Exchange Commission,
shedding some light on how they traded in U.S. stocks in the
first quarter.

But the regulatory filings only tell a small portion of the
story because they offer no explanation for a fund’s buying and
selling of U.S. stocks. The filings also don’t require money
managers to disclose short positions, or bets a stock will
decline in price.

So there is no way of knowing what motivated Coatue to exit
shares of Supervalu, which doubled in price in the first
quarter, after the grocery chain struck a deal in January to
sell some of is supermarket chains to Cerberus Capital
Management for $3.3 billion. Similarly, it is not clear what
prompted JANA to jump into the stock, or even when it
accumulated most of those shares.

The 13-F filings then are an imperfect look into the stock
trading strategy of large funds. It is also important to note
that in the 45 days since the first quarter ended, some of the
reported stock positions may have changed.

For more on how big money managers traded in the first
quarter, here is a breakdown by sectors and actively traded
stocks:

APPLE

Coatue Management added 562,546 shares of Apple,
bringing its total stake in the iPhone and iPad manufacturer to
1.2 million shares.

Appaloosa Management, a $14 billion hedge fund led by David
Tepper, reduced its stake in Apple by 40 percent to 540,000
shares.

OTHER TECH

Farallon Capital Management, a $20 billion hedge funded led
by Andrew Spokes, took a new 2.46 million-share stake in
computer manufacturer Dell Inc, which is embroiled in a
contentious corporate buyout.

INTERNET

JANA opened a new 25.5 million-share stake in online gaming
firm Zynga. Shares of Zynga jumped 7 percent on the
disclosure by the fund, which has a reputation for shareholder
activism.

JANA also opened a 21.9 million-share position in online
coupon company Groupon.

Passport Capital, a $3.7 billion fund led by John Burbank,
opened up a 2.2 million-share position in Yahoo!.

FINANCIALS

Appaloosa reduced its holdings in several financial stocks.
The hedge fund, for instance, cut its stake in American
International Group by 29 percent to 4.3 million shares.

Farallon raised its stake in American Express Co. by
2.1 million shares.

Tsarnaev, 26, died in a gun battle with police on April 19, four days after bombs he is believed to have set with his younger brother killed three people and injured another 264 at the marathon.

Relatives have said they want to have him buried locally, but several cemeteries in Massachusetts said they would not accept the remains for burial. Governor Deval Patrick said on Monday he would not get involved.

Under Islamic law, the body cannot be cremated, a procedure used in some cases of notorious criminals such as Oklahoma City bomber Timothy McVeigh.

“The whole situation is unprecedented,” said David Walkinshaw, a spokesman for the Massachusetts Funeral Directors Association. The state of Massachusetts does not own its own cemeteries, he said, and the federal government has only cemeteries for veterans, thus excluding Tsarnaev.

“The challenge here is that there’s no way to demand a cemetery allow for a burial to take place,” Walkinshaw said.

Tsarnaev’s body was taken to a funeral home, Graham Putnam & Mahoney Funeral Parlors, in Worcester last week after spending more than a week at a medical examiner’s office in Boston. Already several cemeteries including the Gardens at Gethsemane in West Roxbury have said they would not accept Tsarnaev’s body for burial.

Funeral home owner Peter Stefan, who also chairs a board that oversees funeral services and embalming in Massachusetts, has faced protesters but has argued he has an obligation to accept the remains.

Stefan has said he would seek help from state officials if he could not find a resting place soon.

But Massachusetts Governor Patrick declined to get involved in the controversy on Monday.

“I don’t have a comment about that or a point of view,” Patrick said speaking to reporters in New Bedford on Monday. “This is a family issue, with due respect to all of you, and the family needs to make some decisions. I understand they have some options. They need to exercise one soon,” Patrick said.

Tsarnaev’s uncle, Ruslan Tsarni, said on Sunday that his nephew should be buried in Massachusetts, his home. Tsarnaev’s parents, ethnic Chechens who returned to Russia several years ago, have suggested in various interviews and reports that their son should be buried in Cambridge, or returned to Russia.

But Cambridge officials urged the Tsarnaevs to look elsewhere.

“The difficult and stressful efforts of the citizens of the City of Cambridge to return to a peaceful life would be adversely impacted by the turmoil, protests and widespread media presence at such an interment,” said Cambridge City Manager Robert Healy in a statement. “The families of loved ones interred in the Cambridge Cemetery also deserve to have their deceased family members rest in peace.”

(Reporting By Ross Kerber; Editing by Cynthia Osterman)

“We all have courage inside,” Giffords, who herself survived being shot in 2011, said at the Kennedy Library in Boston. “I wish there was more courage in Congress. Sometimes it’s hard to express it.”

The remarks come just a few weeks after the U.S. Senate voted down a measure to expand background checks for gun buyers, a step favored by U.S. President Barack Obama and most Americans.

An online Reuters/Ipsos poll released in January showed that 86 percent of those surveyed favored expanded background checks of all gun buyers.

Giffords, a Democrat, was shot in the head when a gunman opened fire on a congressional outreach event in Tucson in January 2011, killing six people and wounding a dozen others. She resigned from Congress a year after the shooting to focus on her recovery.

Following the attack in Newtown, Connecticut, that killed 26 people at an elementary school in December, Giffords and her husband, former astronaut Mark Kelly, founded a lobby group aimed at curbing gun violence and challenging the political clout of the well-funded gun lobby.

Before the awards ceremony on Sunday, Giffords and Kelly visited victims of the April 15 Boston Marathon bombing who are recovering at the Spaulding Rehabilitation Hospital.

The award, named for President Kennedy’s 1957 Pulitzer Prize-winning book “Profiles in Courage,” was presented to Giffords by foundation president Caroline Kennedy.

(Reporting by Aaron Pressman; Editing by Chris Reese)

Franklin Resources, Invesco and Affiliated
Managers Group reported strong customer net inflows with
an increasing emphasis on stock funds, which typically carry
higher fees and profit margins.

Shares of Invesco jumped 5.4 percent, shares of AMG gained 2
percent and shares of Franklin rose 0.3 percent.

With the Standard & Poor’s 500 Index setting records, many
investors who sat on the sidelines for the past few years have
been jumping back into the stock market. That has buoyed the
fund industry, which historically has made more money when
stocks are in vogue.

At Invesco, customers added a net $2.4 billion to equity
funds, a reversal from the fourth quarter of 2012 when they
pulled $3.3 billion. Still, the firm’s bond funds attracted $5
billion in the first quarter, up from $3.4 billion in the prior
quarter.

That prompted Invesco chief executive Martin Flanagan to
tamp down expectations of a huge wave of further flows into
equities, which some analysts have described as a “great
rotation” from bonds to stocks.

“I would classify it (as the) early stages of the rotation
into equities,” Flanagan said on a call with analysts. “I would
expect people to continue to be cautious throughout the summer.”

The company reported net income per share excluding certain
items of 52 cents, better than the 47 cents expected by
analysts, according to Thomson Reuters I/B/E/S.

At Franklin, the company reported net new flows of $700
million to its global and international equity funds, reversing
an outflow of $4.4 billion from the category in the prior
quarter ended December 31.

Still, its well-known international taxable bond funds, led
by Michael Hasenstab’s $70.9 billion Templeton Global Bond Fund,
remained the company’s most popular products. Net new flows to
the category totaled $15.3 billion during the quarter, Franklin
said.

Franklin, based in San Mateo, California, reported net
income of $2.69 per share for the three months ended March 31,
its fiscal second quarter, beating the average analysts’
estimate of $2.50 per share.

Affiliated Managers said its customers added a record net
inflow of $12 billion in the first quarter. The firm’s adjusted
net income per share of $2.27 exceeded the average analyst
estimate of $2.03.

Amid the generally good results, Legg Mason Inc of
Baltimore reported that customers continued to depart from its
funds. The firm has yet to regain investor confidence after
stumbles during the financial crisis.

Legg Mason reported a net outflow of customer cash during
the quarter though at a slower rate than in the past and said
its equity-focused ClearBridge unit had its best quarter of
customer inflows since 2005.

“Investors are becoming more comfortable, particularly in
the equity markets, than they have been,” said Legg Mason Chief
Executive Joseph Sullivan in an interview. “There’s still a lot
of cash on the sidelines earning nothing, and that cash becomes
impatient at some point,” he said.

Overall, the company reported a net outflow of $1.8 billion
and said excluding money funds, the $3 billion that left its
stock and bond funds was the lowest outflow since 2007.

“Now to be sure less negative is still negative,” CEO
Sullivan said on a conference call with analysts. “However the
improvement in net flows is meaningful and encouraging.”

Video taken by security cameras showed the 19-year-old ethnic Chechen placing a backpack near the finish line of the race one week ago, the criminal complaint said, alleging he acted in concert with his older brother, who was killed during a shootout with police early Friday.

Dzhokhar Tsarnaev was captured later that day after a massive manhunt and taken to the hospital with gunshot wounds.

The criminal complaint did not mention a motive for the bombings, leaving that as one of the mysteries of the investigation.

But a sworn FBI statement in support of the criminal complaint did reveal new details, such as the recollection of a man whose car was allegedly hijacked by the brothers while they tried to escape on Thursday night.

“Did you hear about the Boston explosion?” one of the brothers is said to have told the carjack victim. “I did that.”

The brothers carried two backpacks containing pressure cooker bombs that ripped through the crowd near the finish line of the world renowned race, killing three people and wounding more than 200, the complaint said.

Ten people lost limbs from the bombs packed with nails and ball bearings. By Monday, Boston-area hospitals were still treating at least 48 people, with at least two listed in critical condition.

The charges were delivered on the same day Canadian police said they had thwarted an “al Qaeda-supported” plot to derail a passenger train. U.S. officials said the attack would have targeted a rail line between New York and Toronto, but Canadian police did not confirm that.

The 10-page complaint in the Boston case drew from investigators’ review of a mass of video and still images captured by security cameras, the media and the public at the race before and after the bombing.

Thirty seconds before the first explosion, Dzhokhar Tsarnaev started fidgeting with his cellphone, the complaint said. After the blast, virtually everyone around him turned to look in that direction “in apparent bewilderment and alarm,” while Dzhokhar Tsarnaev appeared calm, the complaint said.

He then left his backpack on the ground and walked away, the complaint said. About 10 seconds later the second explosion ripped through the crowd.

The charges were issued shortly before the city paused at 2:50 p.m. (7:50 p.m. British time) to mark the moment a week ago when the bombs exploded. A funeral was held for Krystle Campbell, a 29-year-old restaurant manager who was killed in the bombings, and a memorial service was planned for another victim, Chinese graduate student Lingzi Lu, 23.

An 8-year-old boy, Martin Richard, was also killed.

WOUNDED SUSPECT

Dzhokhar Tsarnaev was wounded during at least one of two gun battles with police on Friday, suffering gunshot wounds to his head, neck, legs and hand, the complaint said.

He was mostly unable to speak due to a throat wound, managing to say “no” once in response to a question, according to a court transcript posted on the New York Times website. Mostly, he nodded in response to questions.

Magistrate Judge Marianne Bowler found he was lucid and aware of the nature of the proceedings, the transcript said.

His capture capped a tense 26 hours after the FBI released the first pictures of the two bombing suspects, still unidentified, on Thursday.

Five hours after their faces were pictured on TV screens and websites around the world, the brothers shot and killed a university policeman, carjacked a Mercedes and sought to evade police by hurling more bombs at them during a shootout on the streets of a Boston suburb, police said.

Older brother Tamerlan Tsarnaev, 26, was shot during a close-range exchange of gunfire with police and run over by his younger brother during his escape, police said. Dzhokhar Tsarnaev later abandoned the car and fled on foot, evading police for nearly 20 more hours until he was found hiding and bleeding in a boat.

Those extraordinary days captivated the United States and reminded people of the September 11, 2001, attacks.

“Although our investigation is ongoing, today’s charges bring a successful end to a tragic week for the city of Boston, and for our country,” U.S. Attorney General Eric Holder said in a statement.

In choosing the civilian justice system, U.S. authorities opted against treating Tsarnaev, a naturalized U.S. citizen, as an enemy combatant.

Tamerlan Tsarnaev, a legal U.S. resident, visited relatives in the volatile region of Chechnya for two days during his six-month trip out of the United States last year, his mother, Zubeidat Tsarnaeva and aunt, Patimat Suleimanova, told Reuters in Dagestan on Monday.

U.S. investigators were trying to piece together if he may have become radicalized and determine whether he became involved with or was influenced by Chechen separatists or Islamist extremists there.

That trip, combined with Russian interest in Tamerlan Tsarnaev communicated to U.S. authorities and an FBI interview of him in 2011, have raised questions whether danger signals were missed.

The Tsarnaev brothers emigrated to the United States a decade ago from Dagestan, a predominantly Muslim region in Russia’s Caucasus. Their parents, who moved back to southern Russia some time ago, have said their sons were framed.

A grand jury was likely to charge Tsarnaev with more crimes, said former federal prosecutor and University of Notre Dame law professor Jimmy Gurulé, calling the prosecutors’ complaint preliminary.

(Additional reporting by Alissa de Carbonnel in Makhachkala and Svea Herbst-Bayliss, Tim McLaughlin and Samuel P. Jacobs in Boston; Writing by Daniel Trotta; Editing by Frances Kerry and Eric Beech)

Video taken by security cameras showed the 19-year-old ethnic Chechen placing a backpack near the finish line of the race one week ago, the criminal complaint said, alleging he acted in concert with his older brother, who was killed during a shootout with police early Friday.

Dzhokhar Tsarnaev was captured later that day after a massive manhunt and taken to the hospital with gunshot wounds.

The criminal complaint did not mention a motive for the bombings, leaving that as one of the mysteries of the investigation.

But a sworn FBI statement in support of the criminal complaint did reveal new details, such as the recollection of a man whose car was allegedly hijacked by the brothers while they tried to escape on Thursday night.

“Did you hear about the Boston explosion?” one of the brothers is said to have told the carjack victim. “I did that.”

The brothers carried two backpacks containing pressure cooker bombs that ripped through the crowd near the finish line of the world renowned race, killing three people and wounding more than 200, the complaint said.

Ten people lost limbs from the bombs packed with nails and ball bearings. By Monday, Boston-area hospitals were still treating at least 48 people, with at least two listed in critical condition.

The charges were delivered on the same day Canadian police said they had thwarted an “al Qaeda-supported” plot to derail a passenger train. U.S. officials said the attack would have targeted a rail line between New York and Toronto, but Canadian police did not confirm that.

The 10-page complaint in the Boston case drew from investigators’ review of a mass of video and still images captured by security cameras, the media and the public at the race before and after the bombing.

Thirty seconds before the first explosion, Dzhokhar Tsarnaev started fidgeting with his cellphone, the complaint said. After the blast, virtually everyone around him turned to look in that direction “in apparent bewilderment and alarm,” while Dzhokhar Tsarnaev appeared calm, the complaint said.

He then left his backpack on the ground and walked away, the complaint said. About 10 seconds later the second explosion ripped through the crowd.

The charges were issued shortly before the city paused at 2:50 p.m. (1850 GMT) to mark the moment a week ago when the bombs exploded. A funeral was held for Krystle Campbell, a 29-year-old restaurant manager who was killed in the bombings, and a memorial service was planned for another victim, Chinese graduate student Lingzi Lu, 23.

An 8-year-old boy, Martin Richard, was also killed.

WOUNDED SUSPECT

Dzhokhar Tsarnaev was wounded during at least one of two gun battles with police on Friday, suffering gunshot wounds to his head, neck, legs and hand, the complaint said.

He was mostly unable to speak due to a throat wound, managing to say “no” once in response to a question, according to a court transcript posted on the New York Times website. Mostly, he nodded in response to questions.

Magistrate Judge Marianne Bowler found he was lucid and aware of the nature of the proceedings, the transcript said.

His capture capped a tense 26 hours after the FBI released the first pictures of the two bombing suspects, still unidentified, on Thursday.

Five hours after their faces were pictured on TV screens and websites around the world, the brothers shot and killed a university policeman, carjacked a Mercedes and sought to evade police by hurling more bombs at them during a shootout on the streets of a Boston suburb, police said.

Older brother Tamerlan Tsarnaev, 26, was shot during a close-range exchange of gunfire with police and run over by his younger brother during his escape, police said. Dzhokhar Tsarnaev later abandoned the car and fled on foot, evading police for nearly 20 more hours until he was found hiding and bleeding in a boat.

Those extraordinary days captivated the United States and reminded people of the September 11, 2001, attacks.

“Although our investigation is ongoing, today’s charges bring a successful end to a tragic week for the city of Boston, and for our country,” U.S. Attorney General Eric Holder said in a statement.

In choosing the civilian justice system, U.S. authorities opted against treating Tsarnaev, a naturalized U.S. citizen, as an enemy combatant.

Tamerlan Tsarnaev, a legal U.S. resident, visited relatives in the volatile region of Chechnya for two days during his six-month trip out of the United States last year, his mother, Zubeidat Tsarnaeva and aunt, Patimat Suleimanova, told Reuters in Dagestan on Monday.

U.S. investigators were trying to piece together if he may have become radicalized and determine whether he became involved with or was influenced by Chechen separatists or Islamist extremists there.

That trip, combined with Russian interest in Tamerlan Tsarnaev communicated to U.S. authorities and an FBI interview of him in 2011, have raised questions whether danger signals were missed.

The Tsarnaev brothers emigrated to the United States a decade ago from Dagestan, a predominantly Muslim region in Russia’s Caucasus. Their parents, who moved back to southern Russia some time ago, have said their sons were framed.

A grand jury was likely to charge Tsarnaev with more crimes, said former federal prosecutor and University of Notre Dame law professor Jimmy Gurulé, calling the prosecutors’ complaint preliminary.

(Additional reporting by Alissa de Carbonnel in Makhachkala and Svea Herbst-Bayliss, Tim McLaughlin and Samuel P. Jacobs in Boston; Writing by Daniel Trotta; Editing by Frances Kerry and Eric Beech)

The 26-year-old Tamerlan Tsarnaev, identified by the FBI as one of two brothers suspected in last Monday’s blasts, was a close friend of one of three men who were stabbed in the neck in an apartment in Waltham, Massachusetts in September, 2011.

At the time, the Middlesex County District Attorney’s office said it appeared that the victims knew their assailant or assailants and that the attacks were not random.

Tsarnaev’s potential connection to the case surfaced after the website Buzzfeed.com reported that some of his former associates suspect he may have been involved in the murder.

“We are definitely going to pursue any new leads,” said Stephanie Guyotte, a spokeswoman for the Middlesex District Attorney’s office. She said it was fair to say that investigators will check to see if Tsarnaev had anything to do with the crime.

Authorities said the 2011 triple homicide happened at the apartment of Brendan Mess, one of the victims. Tsarnaev and Mess worked out together at a gym and Tsarnaev once introduced Mess to the gym owner as his best friend, according to the Boston Globe newspaper.

Middlesex County in Massachusetts also includes Cambridge, where Tamerlan Tsarnaev and his younger brother Dzhokhar are suspected of killing a Massachusetts Institute of Technology campus policeman on Thursday night before a gun battle with police in Watertown, also part of the county.

It does not include Boston, where investigators believe the brothers carried out last Monday’s bombing at the Boston Marathon finish line, killing three people and injuring more than 170. Dzhokhar Tsarnaev, 19, lay in a Boston hospital under armed guard on Monday following his capture by police in Watertown on Friday night. He was unable to speak because of throat injuries sustained during shoot-outs with police.

(Editing by Scott Malone and Grant McCool)

The apparent break in the investigation came after a day-long manhunt for a 19-year-old ethnic Chechen suspected in Monday’s bombings. His older brother, also identified as a suspect, was killed in a shootout overnight.

Shortly after police told a news conference that the suspect fled on foot and was still on the loose, a Reuters witness saw dozens of police and armored vehicles rush to the street and then gunfire was heard in Watertown.

Another witness, a Watertown resident, saw men with machine guns on Franklin Street, which is less than a mile from the scene of the overnight shooting in which 200 rounds were fired and explosives set off.

“There’s about 50 guys there with machine guns and they all got bulletproof vests on, some of them are holding shields and they’re all congregated on the far end of Franklin Street,” said Anna Bedirian, who lives on the street. “There are a couple armored cars and they’re all standing around.”

Officials identified the fugitive as Dzhokhar Tsarnaev, 19, and his brother as Tamerlan Tsarnaev, 26.

Monday’s bombing on the finish line of the world-famous Boston Marathon, which killed three people and injured 176, was described by President Barack Obama as “an act of terrorism.” It was the worst such attack on U.S. soil since the plane hijackings of September 11, 2001.

Images showed that the house on which police were focusing on was white with three stories with a tarp-covered boat parked on a trailer in the backyard.

Earlier on Friday, Colonel Timothy Alben told the news conference: “We do not have an apprehension of our suspect this afternoon. We remain committed to this.”

Alben said officers went door-to-door in Watertown and searched houses. Officials followed a number of leads that were not fruitful and there was “much work to be done” he said.

U.S. government officials said the men had not previously been on the radar as possible militants.

A U.S. law enforcement source said the FBI interviewed the older brother, Tamerlan Tsarnaev, in 2011 at the request of a foreign government. The source said no “derogatory” information was found and the matter was closed.

During the search for the men on Friday, two Black Hawk helicopters circled the area. SWAT teams moved through in formation, leaving an officer behind to ensure that searched homes remained secure, a law enforcement official said.

The normally traffic-clogged streets of Boston were empty on Friday as the city went into lockdown after a bloody night of shooting and explosions. Public transportation had been suspended and air space restricted. Famous universities, including Harvard and MIT, closed after police ordered residents to remain at home.

Massachusetts Governor Deval Patrick said the “stay-in-place” order for Boston had been lifted and mass transit reopened as police pressed their search for Tsarnaev.

‘PUT A SHAME ON OUR FAMILY’

Details emerged on Friday about the brothers, including their origins in the predominantly Muslim regions of Russia’s Caucasus, which have experienced two decades of violence since the fall of the Soviet Union.

The fugitive described himself on a social network as a minority from a region that includes Chechnya, Dagestan and Ingushetia.

A man who told reporters he was an uncle of the brothers said they came to the United States in the early 2000s and settled in the Cambridge, Massachusetts, area.

Ruslan Tsarni, who lives in suburban Washington and said he had not spoken to the brothers since 2009, said the bombings “put a shame on our family. It put a shame on the entire Chechen ethnicity.

In separate interviews, the parents of the Tsarnaev brothers said they believed their sons were incapable of carrying out the bombings. Others remembered the brothers as friendly and respectful youths who never stood out or caused alarm.

“Somebody clearly framed them. I don’t know who exactly framed them, but they did. They framed them. And they were so cowardly that they shot the boy dead,” father Anzor Tsarnaev said in an interview with Reuters in Dagestan’s provincial capital, Makhachkala, clasping his head in despair.

The FBI said the twin blasts were caused by bombs in pressure cookers and carried in backpacks that were left near the marathon finish line as thousands of spectators gathered.

The mother, Zubeidat Tsaraeva, speaking in English, told CNN, “It’s impossible, impossible, for both of them to do such things, so I am really, really, really telling that this is a setup.”

(Additional reporting by Mark Hosenball, Jim Bourg, Svea Herbst-Bayliss, Daniel Lovering and Ben Berkowitz; Writing by Grant McCool; Editing by Peter Cooney)

“Today we are enlisting the public’s help to identify the
two suspects,” Richard DesLauriers, the U.S. Federal Bureau of
Investigation’s special agent in charge in Boston, told a news
conference.

Both men carried backpacks that were believed to contain the
bombs. The man identified as suspect No. 1 wore a dark baseball
cap. Suspect No. 2 wore a white cap backwards and was seen
setting down his backpack on the ground, DesLauriers said.

“Somebody out there knows these individuals as friends,
neighbors, co-workers or family members of the suspects. Though
it may be difficult, the nation is counting on those with
information to come forward and provide it to us,” he said.

The bombings began a week of security scares that rattled
the United States and evoked memories of the Sept. 11, 2001
hijacked plane attacks. Three people were killed and 176 injured
in the Boston bombings.

President Barack Obama sought to bring solace to Boston and
the nation in an interfaith service at a cathedral about a mile
(1.6 km) from the bomb site, declaring “You will run again” and
vowing to catch whoever was responsible.

He promised resilience in a message directed toward Boston
but also to a country that was on edge.

A man was arrested on Wednesday on suspicion of mailing the
deadly poison ricin to Obama and a massive explosion at a
fertilizer factory devastated a small Texas community, sending
shockwaves at least 50 miles (80 km) away.

Some of the victims of the Boston attack suffered gruesome
injuries, and at least 10 lost limbs as a result of the blasts.
Investigators believe the bombs were made of pressure cookers
packed with shrapnel.

“As you begin this long journey of recovery, your city is
with you, your commonwealth is with you, your country is with
you,” Obama said. “We will all be with you as you learn to stand
and walk and, yes, run again. Of that, I have no doubt. You will
run again.”

After his speech, Obama met with volunteers and Boston
Marathon organizers, many of whom cared for the injured, and
with victims at Massachusetts General Hospital.

(Additional reporting by Tim McLaughlin, Mark Felsenthal and
Daniel Lovering in Boston and Deborah Charles, Mark Hosenball
and Roberta Rampton in Washington; Editing by Scott Malone,
Daniel Trotta, Frances Kerry and Grant McCool)