A heavily-tattooed Asian man was found dead near Suvarnabhumi airport on Sunday with three bullet wounds to the head, police said.
Police at Suvarnabhumi airport were informed of the body at a deserted stall on Suvarnabhumi Sai 4 Road.
There were two bullet wounds on the left side of the head and another on the right side. Police believed the victim had been dead for five hours.
There were tattoos on the body, arms and bottom. There was 3,181 baht in cash with the body, but no identification documents.
The body wore jeans and a black T-shirt. No shoes were found at the scene.
A pair of black gloves and pieces of human brain were found in front of the stall. There were bloodstains on the ground showing the track of the body being pulled into the stall.
CCTV footage showed a red Mazda car at 7.30am circling the area before stopping in front of the stall.
Police were trying to identify the victim.