The FBI also looked into whether a separate set of emails between Petraeus and Broadwell might involve any security breach. That will be a key question Wednesday in meetings involving congressional intelligence committee leaders, FBI deputy director Sean Joyce and CIA deputy director Michael Morell.
A federal law enforcement official, speaking on condition of anonymity to discuss details of the investigation, said the FBI had concluded relatively quickly — and certainly by late summer at the latest — that there was no security breach. Absent a security breach, it was appropriate not to notify Congress or the White House earlier, this official said.
Extramarital affairs are viewed as particularly risky for intelligence officers because they might be blackmailed to keep the affair quiet. For military personnel, adultery is a crime under the Uniform Code of Military Justice.
According to two federal law enforcement officials, the FBI initially began a criminal investigation of unsigned, harassing emails that were sent, beginning last May, to Kelley, a Tampa socialite. She and her husband, Scott, were longtime friends of Petraeus and his wife, Holly. FBI agents traced the alleged cyber harassment to Broadwell and during that process discovered she was exchanging intimate messages with a private Gmail account. Further investigation revealed that account belonged to Petraeus, under an alias.
Petraeus and Broadwell apparently used a trick, known to terrorists and teenagers alike, to conceal their email traffic, one of the law enforcement officials said.
Rather than transmitting emails to the other's inbox, they composed at least some messages and instead of transmitting them, left them in a draft folder or in an electronic "dropbox," the official said. Then the other person could log onto the same account and read the draft emails there. This avoids creating an email trail that is easier for outsiders to intercept or trace.