James Lockhart, head of the Federal Housing Finance Agency

James Lockhart, head of the Federal Housing Finance Agency

The chief financial officer at Freddie Mac who died in an apparent suicide was a capable executive who had no involvement in any improper accounting, according to Freddie Mac's federal regulator.

"David (Kellermann) was a very conscientious and hard-working person and took, unfortunately, too much onto himself," James Lockhart, the director of the Federal Housing Finance Agency, told the Reuters Global Financial Regulation Summit in Washington.

Kellermann was found dead on April 22 in the basement of his Virginia home after having hung himself, local police sources said. Some news reports at the time tied Kellermann's death to ongoing federal investigations into Freddie Mac's accounting.

"You know, one of the things I find unfortunate? Some of the speculation about accounting issues at Freddie. They are very rigorous," Lockhart said. He described Kellermann as a "straight arrow" whose reputation was above reproach and said that the failings at Freddie Mac were widely shared.

Last September, federal regulators took over Fannie Mae and Freddie Mac as the the companies losses on the housing market mounted.