General David Petraeus in Afghanistan.

Before his nomination as CIA director, the retired four-star general was one of the nation's most well-known and popular military leaders. Now his stellar record is sullied by his resignation due to fallout from this scandal.

SEE ALSO: CIA Director David Petraeus Resigns Following Extramarital Affair 

Jill Kelley, 37, of Tampa has been identified as the woman who prompted the broader investigation into harassing e-mails that led to Broadwell, and ultimately, to Petraeus, a federal law enforcement official said. The official, who has been briefed on the matter, was not authorized to comment publicly.

Kelley serves as a social liaison to MacDill Air Force Base in Tampa, where the military's Central Command and Special Operations Command are located. Jill Kelley and her husband, Scott, hired Washington, D.C.-based crisis manager Judy Smith and attorney Abbe Lowell.

A close Petraeus associate says FBI investigators told Petraeus that Broadwell sent anonymous emails to Jill Kelley, a Petraeus family friend from his time at Central Command in Tampa, warning her to stay away from him according to The Washington Post.

SEE ALSO: Petraeus' Affair Was Discovered Through Unrelated Email Trace

Petraeus has sparked an outcry in Congress over allegations that the FBI did not inform lawmakers about the probe in a timely fashion. Congressional leaders, including those overseeing intelligence were stunned at the developments and concerned that the administration did not alert them sooner that Petraeus was linked to an FBI inquiry.

House Majority Leader Eric Cantor knew in October about former CIA Director David Petraeus' involvement in an extramarital affair, a spokesman for the congressman told CNN on Sunday. The Times reported that the investigation had already begun by the time Cantor talked with the informant.

"We received no advance notice," Sen. Dianne Feinstein, D-Calif., chairman of the Senate Intelligence Committee, told Fox News Sunday.

"It was like a lightning bolt."

Whether national security was compromised by the relationship remains the primary focus today. And the unanswered questions continue to outnumber the answers.

SEE ALSO: How Petraeus' Affair Compromised National Security

Follow Executive Producer Chima Simone on Twitter here.