Turkish authorities have detained a Russian national and suspected Islamic State militant for allegedly planning a drone attack on US aircraft at Turkey's Incirlik air base.
Renad Bakiev was detained in the southern city of Adana over suspicions that he plotted to crash an American aircraft or attack the Incirlik air base using a drone, Adana police said in a statement.
Bakiev also intended to attack the local Alevi community in Adana city, the statement said.
It said he was affiliated with IS and had previously travelled to Syria.
The Alevi religious minority is an offshoot of Shia Islam and is the largest religious group in Turkey after Sunnis. IS regards Alevis as heretics.
Bakiev appealed for 2,800 Turkish lira (£600) from other militants on the Telegram messaging application, which IS sympathisers use widely, to buy a drone, police said.
The private Dogan news agency said during his questioning that he allegedly defended the need to kill Alevis and considered them "enemies of Allah", the statement said.
During police interrogations, Bakiev admitted to reconnoitering the air base for his strike, the police statement said.
A previous attempt he made to attack Americans was unsuccessful.
The US air force has used Incirlik air base, near Adana, as a staging post for the air campaign against IS in Syria and Iraq since 2015.
IS militants have used armed drones to deadly effect in Iraq and Syria, converting commercial drones to carry small explosives.