The US State Department confirmed Tuesday that it has received a formal extradition request for the Turkish cleric accused of plotting a failed coup last month.
"We can confirm now that Turkey has requested the extradition of Mr (Fethullah) Gulen," spokesman Mark Toner said, but the request was on charges unrelated to the recent coup attempt.
The announcement confirms remarks made by a senior US official last week that President Recep Tayyip Erdogan's government so far only has requested Gulen's return on criminal charges not related to the coup.
Toner did not provide further details about what the charges against Gulen entailed.
US Justice Department officials are in Turkey to meet with Turkish officials and review evidence and Vice President Joe Biden is to meet with Turkish leaders Wednesday for talks that were expected to include the topic.