Greece's coastguard says at least eight people have drowned after a speedboat carrying migrants tried to evade a coastguard patrol in the Aegean Sea.
The speedboat capsized, the coastguard said, after the boat driver "lost control" in the attempt to escape from a Greek patrol vessel.
The boat was travelling at high speed and collided with the side of a Greek coastguard vessel as it was trying to get away, according to Greek media reports.
So far 18 people have been rescued from the sea, the coastguard said, with many of the survivors suffering from injuries after the incident.