Two boats laden with immigrants en route to Greece have capsized killing more than 20 including four children.
A number of people are still missing.
The vessels had been attempting to enter Greece when they capsized near the island of Samos near the Turkish coast.
Authorities say 32 men, three women and a child have been rescued.
Survivors told the Greek coastguard that between 60 and 65 people had been on board the two craft which had set sail from Turkey.
The nationalities of those on board have not been released.
It is the third such tragedy in Greece this year.