Kathu District Police Superintendent Pol Col Jirapat Pochanapant told The Phuket News, “We believe that he drowned and that he had been dead about two hours.
The bald, bearded man was wearing just a red shirt. Police are also hoping a ring he was wearing may help in identifying him.
Officers scoured the area for more clues but found none.
“Our men are now checking all hotels to see whether any are missing a guest,” Col Jirapat said.
The body is currently being held in Patong Hospital.