A horrified maid found the body of a pensioner who suffered a heart attack during sex with an escort after popping aphrodisiac pills.
The cleaner, who checked the room at midnight, found the man's penis was still erect despite being dead for more than an hour and packets of an aphrodisiac called "the muscle" were near the bedside.
The man - named by police as San Gray - had booked into the sleazy motel last Thursday night at 7pm before ordering food to eat in the room.
A woman was seen on CCTV arriving on a moped at 10pm before leaving a "short time later" while the man was sprawled naked on the bed in Bueng Kan, northern Thailand.
Police said they believed he had suffered a heart attack while having sex with the young girl due to the power of the drug, or that he had eaten a large meal before having "vigorous activity".
Police Captain Narong Srimart said:
The official opening of the door into the room (SIC). The deceased was found lying naked. But his penis was still hard and erect. We believe he had been dead for at least an hour. He took the aphrodisiac before having sex and had a heart attack during sex. The lady knocked on the door at 10pm but after not long left the room very quickly.