Two Greek coast guard vessels are searching the waters off the eastern coast of the island of Lesbos for four people still missing after a dinghy carrying migrants or refugees capsized while making its way across from the nearby Turkish coast.

The search continued Tuesday, a day after the coast guard recovered two bodies and rescued six people after being alerted to the incident when a fishing boat picked up a man found in the sea.

The body of a third man was also recovered Monday night, but from a different part of the island, leading authorities to suspect he might have died in a separate incident.

Greece has been overwhelmed by more than 160,000 refugees and migrants so far this year. The vast majority arrive in Lesbos.