WASHINGTON (AP) — An aide to House Majority Leader Eric Cantor says the Virginia congressman first heard about CIA Director David Petraeus' extramarital affair on Saturday, Oct. 27, from an FBI source he didn't know.

Communications director Rory Cooper told The Associated Press Monday that Cantor notified the FBI's chief of staff of the conversation, but did not tell anyone else because he did not know whether the information from an unknown source was credible.

The spokesman said the Oct. 27 conversation was arranged by Rep. Dave Reichert, a Washington Republican. Reichert had initially received a tip from an FBI source who was a colleague of the bureau employee who called Cantor.