Turkey has formally asked the German government to arrest and extradite a top suspect in last year's failed coup attempt following reports suggesting he has been spotted in Germany.
Foreign minister Mevlut Cavusoglu said Turkey has submitted a formal note demanding the extradition of fugitive Adil Oksuz.
Mr Oksuz, who is accused of being a follower of US-based cleric Fethullah Gulen, is believed to have played a key part in last summer's failed coup.
Mr Gulen denies any involvement in the coup.
The request comes amid souring relations between the two countries.
Turkey accuses Germany of providing a safe haven to Kurdish militants and suspects wanted for alleged links to the coup.
Mr Cavusoglu said: "If this person is there, we asked that he be located, taken into custody and returned to Turkey."