Seven Turkish security personnel were killed when a reconnaissance plane crashed in eastern Van province, state-owned Anadolu Agency quoted the interior minister as saying on Thursday.
Suleyman Soylu said the plane crashed on a mountain at an altitude of 2,200 feet (670 meters). The dead included the two pilots, he added.
Accident investigators are working to determine the cause of the crash, Broadcaster NTV said.
NTV quoted Soylu as saying that the last contact from the plane was received at 10.32 pm (1932 GMT) on Wednesday. The plane disappeared from radar 13 minutes later, Reuters reported.