Coastguard officials in Greece say they have found a body aboard a boat that sent out a distress call as it was taking 150 illegal immigrants to Italy.
The identity of the dead man and the circumstances of his death are unclear.
The authorities have taken the immigrants, mostly Indian, Egyptians and Iraqis, to a community centre on the island of Crete.
One report said three men on the boat had been arrested on suspicion of people smuggling.
Most of those on board are reported to be between 18 and 35 years old.