A 44-year-old British national was found dead at the old port of Spetses on Friday morning, state-run news agency AMNA reported.
Authorities said he had sustained injuries on the left side of his head and an autopsy has been ordered to determine the cause of death. His body will be transferred to Piraeus this afternoon.
The man was a crew member of a sailing boat participating in the Classic Regatta that is in progress on the island. It was unclear where the body was found with some media reports saying it was spotted by the crew of a passing sailboat, who informed the port authorities.