The body of Fabrioe Boigeol, 37, was found lying partially under a stripped mattress in a room at the Morgot Resort in Chalong at about 1:45pm.
“Police and forensic investigators are checking CCTV in and around the resort for possible suspects,” Phuket Provincial Police Deputy Commander Peerayuth Karajedee told the Phuket Gazette Saturday.
“We have yet to establish a motive for the murder. We need to first find the suspect or suspects. There could be more than one person involved in this case.
“Please give us some time, we will have more information soon.”
Mr Boigeol checked into the resort on March 6, and had planned to check out on April 21.
The French Embassy has been informed of the death.