Greek PM Alexis Tsipras promised Turkish President Erdogan that the extradition is being processed and will be completed soon.
The office of Turkish Prime Minister Binali Yildirim says Greece has initiated extradition procedures against eight Turkish military officers who fled in a helicopter following Friday's failed coup attempt.
Greek Prime Minister Alexis Tsipras called Yildirim late on Sunday, confirming that the extradition process had begun.
Tsipras congratulated Turkish citizens and their government on efforts to render the attempted coup unsuccessful, acknowledging the "importance for the whole region of maintaining the constitutional democratic regime and stability in Turkey".
The Greek PM also reiterated the support of his government and people.
The government and people of Greece are following the ongoing situation in #Turkey standing for democracy and constitutional order.— Alexis Tsipras (@tsipras_eu) July 16, 2016
Yildirim thanked Tsipras for the sensitivity and support of the Greek government in the process.
Turkish President Recep Tayyip Erdogan said on Sunday that in a telephone conversation with Tsipras the previous night, the Greek leader told him that the Turkish officers would be returned within 10 to 15 days.
The Black Hawk helicopter used in the attempted escape was returned to Turkey on Saturday.