WASHINGTON -- Members of Congress said yesterday they want to know more 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.

"We received no advance notice. It was like a lightning bolt," said Democratic Sen. Dianne Feinstein of California, who heads the Senate Intelligence Committee.

The FBI was investigating harassing emails sent by Petraeus biographer and girlfriend Paula Broadwell to a second woman. The probe of Broadwell's emails revealed the affair between her and Petraeus. The FBI contacted Petraeus and other intelligence officials, and Director of National Intelligence James Clapper asked Petraeus to resign.

A senior U.S. military official identified the second woman as Jill Kelley, 37, who lives in Tampa, Fla., and serves as a social liaison to the military's Joint Special Operations Command.

The military official, who spoke on condition of anonymity, said Kelley had received harassing emails from Broadwell, which led the FBI to examine Broadwell's email account and eventually discover her relationship with Petraeus.

A former associate of Petraeus confirmed that the target of the emails was Kelley, but said there was no affair between the two, speaking on condition of anonymity to discuss the retired general's private life. The associate, who has been in touch with Petraeus since his resignation, said Kelley and her husband were longtime friends of Petraeus and his wife, Holly.

Petraeus resigned while lawmakers still had questions about the Sept. 11 attack on the U.S. Consulate and CIA base in Benghazi, Libya, that killed four Americans, including U.S. Ambassador Chris Stevens. Lawmakers said it's possible Petraeus will still be asked to appear on Capitol Hill to testify about what he knew about the U.S. response to that incident.

Rep. Peter King, chairman of the House Homeland Security Committee, said the circumstances of the FBI probe smacked of a cover-up by the White House.

"It seems this [the investigation] has been going on for several months and, yet, now it appears that they're saying that the FBI didn't realize until Election Day that General Petraeus was involved. It just doesn't add up," said King (R-Seaford).

Petraeus, 60, quit Friday after acknowledging an extramarital relationship. He has been married 38 years to Holly Petraeus, and they have two adult children, including an Army lieutenant son who led an infantry platoon in Afghanistan.

Broadwell, 40, a graduate of the U.S. Military Academy and an Army Reserve officer, is married and has two young sons.

Broadwell has not responded to emails and phone messages. Attempts to reach Kelley were not immediately successful.

Petraeus' affair with Broadwell will be the subject of meetings Wednesday involving congressional intelligence committee leaders, FBI deputy director Sean Joyce and CIA deputy director Michael Morell. Petraeus had been scheduled to appear before the committees on Thursday to testify on what the CIA knew and what the agency told the White House before, during and after the attack in Benghazi.

Morell was expected to testify in place of Petraeus, and lawmakers said he should have the answers to their questions. But Feinstein and others didn't rule out Congress possibly compelling Petraeus to testify about Benghazi at a later date, even though he's relinquished his job.

Feinstein said she first learned of Petraeus' affair from the media, and confirmed it in a phone call Friday with Petraeus. She eventually was briefed by the FBI and said so far there was no indication that national security was breached.

Clapper was told by the Justice Department of the Petraeus investigation about 5 p.m. on Election Day, and called Petraeus and urged him to resign, according to a senior U.S. intelligence official who spoke on condition of anonymity.

Georgia Sen. Saxby Chambliss, the top Republican on the Senate intelligence committee, called Petraeus "a great leader" who did right by stepping down and still deserves the nation's gratitude. He also didn't rule out calling Petraeus to testify on Benghazi at some point.

Out East: Mecox Bay Dairy, Kent Animal Shelter, Custer Institute & Observatory and local champagnes NewsdayTV's Doug Geed takes us "Out East," and shows us different spots you can visit this winter.

Out East: Mecox Bay Dairy, Kent Animal Shelter, Custer Institute & Observatory and local champagnes NewsdayTV's Doug Geed takes us "Out East," and shows us different spots you can visit this winter.

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