A Polish man was found dead with a severe knife wound to his throat in the bathroom of a luxury hotel on Sukhumvit Soi 23 in Bangkok late Friday night.
The 42-year-old tourist, wearing a white bathrobe, was found lying in a pool of blood. A 10-centimetre knife was found in the bathroom, Manager Online reported.
There were no traces of a struggle in the room and none of the man's belongings had been stolen, said Pol Sub Lt Thotsaphol Insith, a duty officer at Thong Lor police station.
Hotel staff told police that the man had checked in on Wednesday and was scheduled to leave on Friday afternoon. After the checkout time passed, a staff member phoned the room but received no answer. She then went to the room and knocked several times but got no response.
Pol Sub Lt Thotsaphol said police initially believed the man might have killed himself but they need to investigate further. Officers will examine closed-circuit television footage to see if anyone else entered his room and look for other possible clues about this death.
Authorities are now working with the Polish embassy to contact the man's relatives.