At least twelve people drowned when their boat sank off an island in western Greece on Saturday, Greek authorities said, marking the deadliest toll in months in Greece's migrant crisis.
Twenty one people were rescued, the coastguard said.
Helicopters and ships were searching the area south-west of the island of Paxos for more survivors. Authorities said they had accounts of up to 50 people being on the vessel.
The Greek authorities said they had scrambled to the area after receiving a distress signal from the boat which was taking in water. No further details were immediately available.