WASHINGTON - The FBI probe into the sex scandal that prompted CIA Director David Petraeus to resign has expanded to ensnare Gen. John R. Allen, the commander of U.S. and NATO troops in Afghanistan, the Pentagon announced Tuesday. The same investigation is seeking to determine how Paula Broadwell, the woman who had an affair with Petraeus, obtained classified files.
According to a senior U.S. defense official, the FBI has uncovered between 20,000 and 30,000 pages of documents -- most of them e-mails -- that contain "potentially inappropriate" communication between Allen and Jill Kelley, a Florida woman whose report of harassment by a person who turned out to be Broadwell ultimately led to Petraeus' downfall.
Meanwhile, senior law enforcement officials said that a late-night seizure on Monday of boxes of material from the North Carolina home of Broadwell marks a renewed focus by investigators on sensitive material found in her possession.
"The issue of national security is still on the table," one U.S. law enforcement official said. Both Petraeus and Broadwell, his biographer, have denied to investigators that he was the source of any classified information, officials said.
The surprise move by the FBI follows previous assertions by U.S. officials that the investigation had turned up no evidence of a security breach -- a factor that was cited as a reason the Justice Department did not notify the White House before last week that the CIA director had been ensnared in an e-mail inquiry.
Key lawmakers signaled Tuesday their intent to scrutinize Justice's handling of an inquiry that focused initially on a potential conflict between two private people but quickly morphed into an exhaustive examination of the e-mail of two top national security officers.
"My immediate gut is like this is the National Enquirer," Sen. Dianne Feinstein, D-Calif., the chairman of the Senate intelligence committee, said in an interview on CNN. "I mean, every day there is something new."
Allen, a Marine, succeeded Petraeus as the top allied commander in Afghanistan in July 2011. He also served as Petraeus' deputy when both generals led the military's Tampa-based Central Command from 2008 until 2010. He had been nominated by the White House to take over as chief of the military's European Command and NATO's Supreme Allied Commander in Europe, but that nomination is on hold.