Greece's prosecutors started an inquiry with the eight pro-coup soldiers detained by police after the eight escaped to Greece upon realizing the failure of the coup attempt in Turkey.
They were questioned over “illegal entry" and “jeopardizing the friendly relation between two countries".
The coup plotters, suspected members of the pro-Gülen FETÖ terrorist organization, escaped in a Sikorsky Black Hawk helicopter that landed at a site near Alexadroupolis on Saturday.
Greek authorities said they allowed the landing of the helicopter after they sent a distress signal at 11:45 a.m. local time.
The Greek media outlet said the six out of eight coup plotters on aboard were dressed in military and police uniforms. The plotters have requested political asylum from Greek authorities.
Following Sunday's interrogation in front of Greek prosecutors, the pro-coup soldiers are expected to be sent to high criminal court in short time.
“Then the judicial process will begin," according to Lia Marinaki, a lawyer of the soldiers.
Earlier Saturday, Foreign Minister Mevlüt Çavuşoğlu tweeted that Turkey had “requested the immediate surrender of the eight traitor soldiers who fled to Greece with a helicopter."
President Recep Tayyip Erdoğan also had a telephone conversation with Greek PM Alexis Tsipras on the extradition of the officers.
"What's necessary will be done quickly," said Tsipras, adding that they are standing by the Turkish government against the coup attempt.