Thirty-two Turkish nationals were rescued by a patrol boat in the Aegean Sea, the Greek coastguard said Saturday.
The group was spotted in a rubber dinghy off the Greek island of Oinousses, overnight Thursday to Friday, the coastguard told AFP.
They were taken to the island of Chios, where migrants and refugees crossing the area, often from Turkey, are registered and identified.
A man believed to be a smuggler who was also onboard the boat was arrested by police.
The Turkish government is unhappy that Greece has failed to extradite suspects wanted over the 2016 failed coup, notably eight officers who escaped by helicopter on the putsch night.