(MCT) — WASHINGTON — FBI Director Robert Mueller’s top aide was told former CIA chief David Petraeus was having an extramarital affair that might have compromised national security a week before the Nov. 6 elections, a congressional official said Monday.

The disclosure raises fresh questions about why the FBI leadership withheld the information from the nation’s top intelligence official and the congressional committees that oversee the U.S. intelligence community until after President Barack Obama won re-election.