David Petraus

In his first public speech since resigning as head of the CIA, David Petraeus apologized for the extramarital affair that "caused such pain for my family, friends and supporters."

The Pentagon says the top American commander in Afghanistan, Gen. John Allen, is under investigation for alleged "inappropriate communications" with Jill Kelley, the woman who is said to have received threatening emails from Paula Broadwell, the woman with whom former CIA Director David Petraeus had an extramarital affair.

FBI agents were at the North Carolina home of the woman whose affair with retired Gen. David Petraeus led to his resignation as CIA director.

A former spokesman for David Petraeus says the retired general's affair with a female biographer started after Petraeus left the Army.

Members of Congress said Sunday they want to know more details about the FBI investigation that revealed an extramarital affair between ex-CIA Director David Petraeus and his biographer, questioning when the retired general popped up in the FBI inquiry, whether national security was compromised and why they weren't told sooner.

The scandal that brought down CIA Director David Petraeus started with harassing emails sent by his biographer and paramour, Paula Broadwell, to another woman, and eventually led the FBI to discover the affair, U.S. officials told The Associated Press on Saturday.

A scandal has cost CIA Director David Petraeus his job