A Turkish Army Aviation Command Sikorsky S-70 Blackhawk helicopter crashed on 17 December, killing all four on board.
The aircraft crashed 12 km south of Gölbasi, a suburb of Turkish capital Ankara, during a training flight. An investigation into the accident has begun, the Turkish General Staff stated.
The site of the crash is near to the Ogulbey district where the Turkish Special Forces Command is located.
Local media reported that the helicopter hit high-tension wires, although this was subsequently denied by Turkish prime minister Recep Tayyip Erdogan, who blamed technical issues for the crash.
A similar crash occurred in Gölbasi in January 2011, when a Bell UH-1 helicopter belonging to the army crashed during a night training flight, killing five army pilot officers.