They’re not linked, but the stories that topped the news shows this morning had to do with sex and with the Olympics.

Late-night comedian David Letterman made an unusual confession on his show last night: he was the victim of a $2 million extortion plot by a man who threatened to write a screenplay about Letterman having afffairs with female employees.

The talk show host quoted a blackmail note as saying: “I know that you do some terrible, terrible things and I can prove that you do these terrible things.”

Initially, Letterman’s audience didn’t understand and thought he was telling a joke. They laughed as he said he found a package in his car three weeks ago from a person who was trying to blackmail him.

Then the audience seemed kind of stunned, not knowing how to react as the 62-year-old comedian spoke about the “very bizarre experience” as he admitted that he had had sex with women who work for him on the show. He then went on to say he hoped to protect his family and his job.

An employee with CBS’s “48 Hours” was arrested in the case.

The other top story: President Obama’s Olympic plea to try to win the 2016 Summer Games for Chicago.

Obama flew overnight to Copenhagen then went directly to speak to the International Olympic Committe, which will choose the host of the 2016 Olympics. Finalist cities also include Rio de Janeiro, Madrid and Tokyo.

Obama made an impassioned plea for the place he said he fell in love with 25 years ago, the city he called the “most American of American cities.”

The president was accompanied by his wife, Michelle, who spent the last two days lobbying IOC members to vote for her hometown to host the Summer Games.

Obama is due to make a statement shortly after he returns to the White House, around 4 p.m. (2000 GMT). The IOC is expected to announce its decision at 12:30 p.m. (1630 GMT).

 For more Reuters political news, click here.

Photo credits: Reuters/Robert Galbraith (Letterman at the 57th Emmy Awards in 2005);  Reuters/Kevin Lamarque (Obama hugs his wife before speaking to IOC in Copenhagen)