Greece's coast guard is searching for at least six people missing at sea after the dinghy they were using to enter Greece clandestinely from the nearby Turkish coast overturned off the coast of the eastern Aegean island of Lesbos.

The coast guard said it had rescued six people and recovered the body of one man, and was searching the area for the missing. It was alerted after a fishing boat picked up one person off the island's eastern coast Monday morning, and a second managed to swim to the island. The two told authorities they had been in a boat carrying about 15 people when it overturned.

Greece has been overwhelmed by an influx of mainly refugees reaching its islands from Turkey.