By The Nation
Police said the room in a six-floor boarding house on Soi Sin Thiwa Thani 2 in Tambon Sam Ruan appeared to be locked from the inside and that rescuers from a local foundation had to force the door to gain entry.
The woman appeared to be around 25 to 30 years old. She was found lying on her back wearing only a pink t-shirt and pink underwear. Bruises were seen on her torso, legs and arms and there were traces of cigarette burns on several parts of her body.
A doctor determined she had died about eight hours earlier.
The room had not been ransacked and there were no signs of a fight.
The caretaker of the boarding house told police she was informed by other tenants of a smell coming from the locked room and called the police.
She added that the room was rented by a man about two months ago but he had not given his identification card nor signed a contract. She said the woman moved in later.
Police will check the security cameras of the boarding house to try to identify the man and summon him for questioning.
The body was sent to Thammasat University hospital for autopsy.