"I received information from an individual that I had not met before and did not know," Cantor said later. "The information that was sent to me sounded as if there was a potential for a national security vulnerability."
FBI investigators interview Petraeus. There's disagreement over the date. The Washington Post reports it's October 29.
The FBI wraps up its case after interviewing Paula Broadwell a second time.
Broadwell offers CNN "a short essay on (Petraeus') leadership principles in light of" his 60th birthday. "Sorry I have been incognito-focused on the phd!" she adds.
November 6 (Election Day)
Petraeus' boss, Director of National Intelligence James Clapper, is informed of the probe in a phone call from the FBI at around 5 p.m. He speaks with Petraeus and advises him to resign.
Clapper notifies staff that Petraeus -- who turns 60 this day -- is considering resigning and why.
Newly re-elected President Barack Obama is informed. Petraeus visits the White House to hand in his resignation.
White House spokesman Jay Carney says later: "The president was certainly surprised when he was informed about the situation regarding General Petraeus on Thursday."
The president accepts Petraeus' resignation during a phone call. Petraeus steps down as director of the CIA, days before he was scheduled to testify before the Senate Intelligence Committee about the September 11 attack in Benghazi.
According to a congressional aide familiar with the matter, the House and Senate intelligence committees weren't informed that there was an FBI investigation before November 9.
Obama is also made aware of the investigation into Allen when the Department of Justice notifies White House counsel that there may be an issue associated with Allen's nomination, according to National Security Council spokesman Tommy Vietor.
Lawmakers complain in televised interviews that the FBI didn't alert them sooner to the investigation.
Sen. Dianne Feinstein, D-California, who chairs the Senate intelligence committee, says on Fox: "We received no advance notice; it was like a lightning bolt."
Kelley's identity is revealed by the Associated Press, and she issues a statement asking for privacy.
Kelley's statement: "We and our family have been friends with General Petraeus and his family for over five years. We respect his and his family's privacy and want the same for us and our three children."
That evening, the FBI notifies the Pentagon of its investigation into Allen's communications with Kelley, a senior official tells CNN.
Former Petraeus spokesman in Iraq Steve Boyland says Petraeus has told him meetings with Broadwell were "infrequent." He confirms Petraeus had a non-work e-mail account.
He also says Petraeus indicated "there was a possible obsession and she felt she was warding off the competition."
Boyland tells the Daily Mail that after the affair, "David and Paula were still in contact about Paula's dissertation."
Vietor says Fox is "flat out wrong" to suggest Brennan knew about the issue before November 7.
Broadwell retains D.C. criminal defense attorney Robert F. Muse.
At 9 p.m., Broadwell's home in Charlotte is searched to see what classified materials she might have. According to the Charlotte Observer, eight to 10 agents remove several cardboard boxes and bags.