Turkey's Prime Minister Binali Yıldırım said a group within Turkey's military has engaged in what appeared to be an attempted coup.
Yıldırım said on television: "it is correct that there was an attempt."
Yıldırım didn't provide details, but said Turkey would never allow any "initiative that would interrupt democracy."
"Those who are in this illegal act will pay the highest price," he added.
Earlier, military jets were heard flying over the capital, Ankara.
Media reports said ambulances were seen in front of the Turkey's military headquarters.
Justice Minister Bozdağ also confirmed a group tried to stage a coup and said the government is on duty.
Arrest warrants were issued for the soldiers who are involved in the coup attempt.
Entrance to Atatürk International Airport in Istanbul closed, military tanks deployed outside the airport.
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