WASHINGTON, Nov 10 (Reuters) - The FBI investigation that led to the discovery of CIA Director David Petraeus' affair with author Paula Broadwell was sparked by "suspicious emails" that initially did not contain any connection to Petraeus, U.S. law enforcement and security officials told Reuters on Saturday.
But the CIA director's name unexpectedly turned up in the course of the investigation, two officials and two other sources briefed on the matter said.
