Graham Fuller, an ex-vice chairman of the CIA's National Intelligence Council, told The Associated Press he was accused of being the "CIA handler" of a US-based Muslim cleric.
Turkey blames Fethullah Gulen for the 2016 coup attempt, but the cleric denies the allegations.
In an emailed statement late yesterday, Fuller dismissed claims he was in Turkey "directing the coup attempt." He said he was speaking to a group of 100 people in Canada that night.