Image caption Paula Broadwell (left) and Jill Kelley 
 
 The US military has revoked access for two women at the heart of the scandal that led to Friday's resignation of Gen David Petraeus as CIA director. 
 
 Security clearance has been suspended for his ex-mistress, Paula Broadwell. 
 
 And Jill Kelley's pass at the Florida air force base where she organised social events has been frozen. 
 
 An FBI inquiry into Mrs Kelley's complaints of email harassment revealed that Mrs Broadwell and Gen Petraeus had been having an affair. 
 
 Mrs Broadwell, a 40-year-old married mother of two, had apparently sent the anonymous emails to Mrs Kelley warning her to stay away from Gen Petraeus. 
 
 Those emails prompted Mrs Kelley to report the matter to a veteran FBI officer, now identified as Frederick Humphries. 
 
 Mr Humphries was described by one former colleague as a diligent agent. 
 
 He knew Jill Kelley socially and she turned to him when she sought answers about the messages she was receiving. 
 
 The investigation that he began led to the discovery of the affair between Gen Petraeus, 60, and Mrs Broadwell. It also enveloped Afghanistan commander Gen John Allen. 
 
 Obama's backing 
 
 Mrs Broadwell, who wrote a biography of Gen Petraeus, held a security clearance through her work as a reserve Army intelligence officer. 
 
 It is not uncommon for those under investigation to have such clearance suspended, officials say. 
 
 I'm an honorary consul general, so I have inviolability, so they should not be able to cross my property Jill Kelley Profile: David Petraeus 
 
 An investigation is under way into how classified material ended up on the West Point graduate's computer and in her Charlotte, North Carolina home, which was searched by the FBI on Monday. 
 
 Meanwhile, a Pentagon spokesman said suspending Mrs Kelley's pass for MacDill Air Force Base was in the best interests of the local military community. 
 
 He confirmed the 37-year-old married mother of three would be able to enter the base, near Tampa, but only through the visitors' centre. 
 
 She had been described as a "social liaison" for the facility, which is the home of US Central Command. 
 
 In his first public comments on the scandal, US President Barack Obama told reporters on Wednesday he had seen no evidence that Gen Petraeus' extramarital affair compromised national security. 
 
 His resignation should be a "sidenote" to a distinguished career, said Mr Obama. 
 
 Gen Petraeus, who previously commanded the war effort in Iraq and Afghanistan, will testify on Friday to Congress about September's deadly attack on the US consulate in Libya. 
 
 He will not be questioned about his affair with Mrs Broadwell, said lawmakers. 
 
 Meanwhile, General John Allen, the top US commander in Afghanistan, said he plans to "fully co-operate" with an investigation into allegedly flirtatious emails he sent to Mrs Kelley, his lawyer said on Wednesday. 
 
 Adultery is illegal under military law, and Pentagon officials are sifting through thousands of pages of correspondence involving the married Gen Allen, 58, and Mrs Kelley. 
 
 Extravagant parties 
 
 He is said to have addressed her as "sweetheart" and "dear" in the communication, although the messages are not said to be overtly sexual. 
 
 Media caption President Barack Obama praises David Petraeus 
 
 The commander, who has received the backing of President Obama and Defence Secretary Leon Panetta, insists he did nothing wrong. 
 
 But Mr Panetta said on Wednesday that suspending Gen Allen's nomination to be the top Nato commander in Europe, pending an inquiry, was the "prudent" thing to do. 
 
 Mrs Kelley is said to have developed close friendships with Gen Petraeus and Gen Allen. Both men wrote letters supporting her twin sister in a messy custody dispute. 
 
 Mrs Kelley is known to have thrown extravagant parties for officers posted to MacDill and was appointed in August as an honorary consul representing South Korea. 
 
 In a recording of a phone call to police on Monday, Mrs Kelley asked for diplomatic immunity to have media crews outside her house removed. 
 
 "I'm an honorary consul general, so I have inviolability, so they should not be able to cross my property," Mrs Kelley can be heard saying. ||||| Jill Kelley, social liaison to MacDill Air Force Base, is mystery woman Paula Broadwell harassed via email leading to FBI probe Jill Kelley, 37, of Tampa, Fla., reportedly alerted the FBI several months ago about threatening emails she had received from Petraeus alleged mistress, biographer Paula Broadwell, a senior military official told the Associated Press. 
 
 Jill Kelley, 37, (right) is believed to be the 'mystery woman' who blew the lid off former CIA Director David Petraeus ’ career-ending affair. She is seen here with Petraeus' wife Holly Petraeus (left) and her husband Scott Kelley at a party. 
 
 The mystery woman who blew the lid off former CIA Director David Petraeus’ career-ending affair is also tied to the military — a sexy social liaison for an Air Force base in Tampa who says she and the ex-general are just “friends.” 
 
 RELATED: FBI AGENT SENT TOPLESS PICTURES TO PETRAEUS WHISTLEBLOWER 
 
 
 
 Jill Kelley, 37, a married mother of three from the Gulf Coast city, alerted the FBI several months ago after receiving emails from Petraeus’ alleged mistress, biographer Paula Broadwell, warning the stunning Tampa socialite to “stay away from” the spymaster, according to sources with knowledge of the messages. 
 
 RELATED: COMMANDER IN AFGHANISTAN SENT THOUSANDS OF EMAILS TO WHISTLEBLOWER 
 
 Bill Serne/New York Daily News 
 
 The raven-haired Kelley, who has an unpaid position as a social planner for MacDill Air Force Base, insisted in a statement Sunday her relationship with the retired four-star general and ex-CIA director was platonic, dating to when Petraeus ran the U.S. Central Command from the base. 
 
 
 
 “We and our family have been friends with Gen. Petraeus and his family for over five years,” Kelley said. “We respect his family’s privacy and want the same for us and our three children.” 
 
 TWO FAMILIES SHATTERED: CIA DIRECTOR DAVID PETRAEUS' ACCUSED MISTRESS HAS 'IDYLLIC FAMILY' 
 
 BEFORE AFAIR WENT PUBLIC, PETRAEUS' MISTRESS SAID GENERAL HAD 'NO DIRTY SECRETS' 
 
 Amy Scherzer/Tampa Bay Times 
 
 But Broadwell’s father said Sunday his daughter is the victim of character assassination and implied the bombshell story is just a smoke screen for something bigger. 
 
 
 
 “This is about something else entirely, and the truth will come out,” Broadwell’s dad, Paul Krantz, told the Daily News outside his home in Bismarck, N.D. 
 
 
 
 “There is a lot more that is going to come out,” said Krantz, claiming he was not allowed to elaborate. “You wait and see. There’s a lot more here than meets the eye.” 
 
 
 
 He said he supports his daughter “100%.” 
 
 PETRAEUS AFFAIR: TIMELINE ON PAULA BROADWELL AND THE GENERAL'S PHYSICAL SPECIAL OPS 
 
 CSM Marvin L. Hill 
 
 “I stand by my daughter. She is an exceptional person,” Krantz told The News, adding that Broadwell, a West Point grad, and her family were “doing well, considering.” 
 
 
 
 Kelley has not spoken publicly about the scandal. She and her husband, Dr. Scott Kelley, were busy Sunday entertaining guests at a birthday party for one of their daughters at their colonial-style mansion overlooking Tampa’s Hillsborough Bay. 
 
 Bill Serne/New York Daily News 
 
 In an exclusive photo obtained by The News, the Kelleys appeared worried while speaking with Vice Adm. Robert Harward, deputy commander of the Central Command, who showed up at the party in his white dress uniform. 
 
 
 
 Jill Kelley was raised in Philadelphia, where her family settled in the mid-1970s and opened a Middle Eastern restaurant after immigrating from Lebanon. Her father, John Khawam, was a renowned organist in Lebanon. 
 
 ISAF/AFP/Getty Images 
 
 A close friend of Petraeus told ABC News that Kelley saw the general often, but their relationship was innocent. 
 
 
 
 “It is very clear there was nothing going on other than friendship between Kelley and Petraeus,” the friend said. 
 
 
 
 In 2010, Kelley and her husband, a surgeon at Moffitt Cancer Center in Tampa, invited Petraeus and his wife of 38 years, Holly, to be their guests at a party for the Gasparilla parade, an annual pirate-themed festival in Tampa. At the time, Petraeus ran the Central Command from MacDill. 
 
 Getty Images 
 
 Kelley’s 7-year-old daughter, Caroline, even posted a family photo album online that she dedicated to her parents and included family photos — one of her and her sisters posing with Petraeus. 
 
 
 
 “I was with Gen. Petraeus. He came to my house,” Caroline wrote. 
 
 
 
 Broadwell’s extended family members were completely caught off guard by the news of Petraeus’ shocking resignation, which broke Friday. 
 
 
 
 “They didn’t find out about the affair until they saw it on the news Friday night,” the grandmother of Broadwell’s husband, Scott, told The News. “Everyone’s reaction was shock. We were all shell-shocked.” 
 
 T. Ortega Gaines/The Charlotte Observer via AP 
 
 The grandmother, who would only give her first name, Sylvia, described Paula Broadwell as “intelligent and really smart.” 
 
 
 
 “She’s too smart for that,” said Sylvia, adding that her grandson is “a wonderful father to those two young kids.” 
 
 
 
 She said Scott Broadwell’s parents in Sanibel, Fla., “felt like the rug was pulled out from under them.” 
 
 
 
 “It’s a sad situation,” the grandmother said. 
 
 
 
 Petraeus began seeing Paula Broadwell, a writer with a military background, on the side in 2011, several months after he retired from the military, but ended the romance about four months ago, sources told ABC News. 
 
 BuzzFeed, citing sources, said he took her on a government-funded trip to Paris in July 2011. 
 
 Russell Broadwell, Scott’s father, confirmed to The News that he, too, was astonished by the news he first heard on TV Friday. 
 
 Asked if he has spoken to his son, Broadwell said, “Of course, he’s my son.” He refused to further comment. 
 
 
 
 Paula Broadwell, 40 (above), wrote the biography “All In: The Education of General David Petraeus.” She has yet to publicly comment on the scandal that has rocked Washington and the U.S. security community. 
 
 
 
 A source told The Wall Street Journal that Broadwell, who lives in North Carolina, became jealous when she suspected Kelley was in a romantic relationship with Petraeus. 
 
 AP Photo 
 
 Kelley’s twin sister, Natalie Khawam, is a lawyer who represents whistleblowers, but there was no indication Sunday that she was representing her sister. 
 
 
 
 The FBI probe into the menacing emails uncovered other exchanges between Broadwell and Petraeus’ personal email account that made clear their relationship had gone beyond professional limits, including one that talked about “sex under a desk.” 
 
 
 
 The scandal is spreading beyond the participants into the political arena. Several top lawmakers are demanding more information about what the FBI, the CIA and President Obama knew — and when they knew it. 
 
 
 
 Obama accepted the 60-year-old Petraeus’ resignation Friday, a mere three days after his reelection. 
 
 AP Photo 
 
 Rep. Dave Reichert (R-Wash.) confirmed Sunday he first learned of the affair several months ago from a friend who knows Kelley. Reichert told House Majority Leader Eric Cantor (R-Va.), who put Kelley in touch with FBI Director Robert Mueller. 
 
 
 
 Cantor’s staff didn’t immediately tell the House Intelligence Committee or other House leaders because they didn’t know whether the information was credible, Fox News reported. 
 
 
 
 Retired U.S. Army Col. Steve Boylan, Petraeus’ former spokesman, said the general is kicking himself for his atrocious lack of judgment. 
 
 
 
 “He hugely regrets what happened,” Boylan told ABC News. “He pretty much threw away the best job he ever had and put his family through something just too hard to describe.” 
 
 
 
 whutchinson@nydailynews.com 
 
 CLICK FOR VIDEO ||||| DOVER, Fla. — The F.B.I. agent who spurred the investigation that led to the resignation of David H. Petraeus as C.I.A. director is a “hard-charging” veteran who helped investigate the foiled millennium terrorist plot in 1999, colleagues said on Wednesday. 
 
 The agent, Frederick W. Humphries II, 47, is also described by former colleagues as relentless in his pursuit of what he sees as wrongdoing, which appears to describe his role in the F.B.I. investigation involving Mr. Petraeus. Suspecting that the case involved serious security issues and was being stalled, possibly for political reasons — a suspicion his superiors say was unjustified — he took his concerns to Congressional Republicans. 
 
 “Fred is a passionate kind of guy,” one former colleague said. “He’s kind of an obsessive type. If he locked his teeth onto something, he’d be a bulldog.” 
 
 The question of how and why the F.B.I. opened the investigation that has had such momentous consequences has been central from the moment Mr. Petraeus stepped down Friday. The emerging portrait of the agent who initiated the inquiry is another step toward an answer. 
 
 Mr. Humphries, who was identified on Wednesday by law enforcement colleagues, took the initial complaint from Jill Kelley, a Tampa woman active in local military circles and a personal friend, about anonymous e-mails that accused her of inappropriately flirtatious behavior toward Mr. Petraeus. 
 
 The subsequent cyberstalking investigation uncovered an extramarital affair between Mr. Petraeus and Paula Broadwell, his biographer, who agents determined had sent the anonymous e-mails. It also ensnared Gen. John R. Allen, the commander of NATO forces in Afghanistan, after F.B.I. agents discovered what a law enforcement official said on Wednesday were sexually explicit e-mail exchanges between him and Ms. Kelley. 
 
 A spokesman for Ms. Kelley provided her version of events in two conference calls with reporters on Wednesday. Ms. Kelley’s concern when she took the e-mails to Mr. Humphries was that she feared the sender was “stalking” Mr. Petraeus and General Allen, said the spokesman, who asked not to be identified. 
 
 “She asks the agent, ‘What do you make of this?’ ” the spokesman said. “The agent said: ‘This is serious. They seem to know the comings and goings of a couple of generals.’ ” 
 
 General Allen himself had received a similar anonymous e-mail message, sent by someone identified as “kelleypatrol,” advising him to stay away from Ms. Kelley. The general forwarded it to Ms. Kelley, and they discussed a concern that someone was cyberstalking them. 
 
 On Tuesday, Defense Secretary Leon E. Panetta said he had asked the Senate to postpone a confirmation hearing for General Allen’s next assignment while the department’s inspector general reviewed his e-mail correspondence with Ms. Kelley, which was discovered by F.B.I. agents investigating her initial complaint. 
 
 Pentagon officials said the review covered more than 10,000 pages of documents that included “inappropriate” messages. But associates of General Allen have said that the two exchanged about a dozen e-mails a week since meeting two years ago and that his messages were affectionate but platonic. 
 
 A law enforcement official, speaking on the condition of anonymity, disputed that assertion on Wednesday, saying some messages were clearly sexual. Investigators were confident “the nature of the content warranted passing them on” to the inspector general, the official said. 
 
 In a statement on Wednesday, General Allen’s military counsel said he intended to cooperate fully with the inspector general’s investigation. “To the extent there are questions about certain communications by General Allen, he shares in the desire to resolve those questions as completely and quickly as possible,” said the statement from Col. John G. Baker, the chief defense counsel of the Marine Corps. ||||| Jill Kelley, the Tampa woman who became entangled in the David Petraeus sex scandal last year, is filing a lawsuit against the FBI and the Department of Defensefor leaking her name and what she says was false, defamatory information about her during the investigation. 
 
 Paula Broadwell attends prayer event to "seek redemption" 
 
 The complaint, filed in U.S. District Court in Washington, alleges that FBI director Robert S. Mueller and unnamed officials with the Department of Defense unlawfully dragged Kelley and her husband into the former CIA director's scandal when they went to authorities about cyberstalking and threats. Revealing her name and details about the emails made Kelley "an object of ridicule, moral opprobrium, scorn, and derision, causing her shame, public notoriety, egregious loss of privacy and security," the 65-page complaint alleges. 
 
 "Today is an unforgettable day because one year ago threatening emails shook my life, and ultimately changed our country's leadership," Kelley said in a statement. 
 
 "This ill-fated day one year ago has made me an advocate for privacy rights for every American," she continued. 
 
 Law enforcement officials said they stumbled across Petraeus' extramarital affair with his biographer, Paula Broadwell, when Kelley, a socialite well-connected to military circles in Florida, complained to the agency about harassing messages she was getting from Broadwell. 
 
 The media also suggested that Kelley and top U.S. commander Gen. John Allen exchanged potentially embarrassing emails. 
 
 Petraeus, who retired as a four-star general before being named by President Obama to head the CIA in 2011, resigned from his post last November, citing the affair. 
 
 The Department of Defense dropped the cyberstalking investigation against Broadwell in December.
– And now the cast of characters in the David Petraeus scandal is a bit more complete: The FBI agent whose investigation into emails sent to his pal Jill Kelley eventually exposed the whole sordid mess has been identified by the New York Times as 47-year-old Frederick Humphries. Career highlight: He helped foil the 1999 millennium bombing plot. (An old Seattle Times story has details, along with photos of him.) Quote that explains a lot: “Fred is a passionate kind of guy," says an ex-colleague. "He’s kind of an obsessive type. If he locked his teeth onto something, he’d be a bulldog.” About that shirtless photo: Yes, he sent such a photo to Kelley years ago, but it was harmless fun, says his lawyer. “It was sent as part of a larger context of what I would call social relations in which the families would exchange numerous photos of each other." Meanwhile, CNN reports that Paula Broadwell has lost the security clearance she had before the scandal broke. The development comes after the Pentagon revoked a special ID held by Kelley that enabled her to visit MacDill Air Force Base without a military escort, notes the Tampa Bay Times.