A British man is being held by Thai police after a chopped-up body was found in a freezer in Thailand.
The corpse has yet to be identified after being found during a raid on Friday.
A British man and two Americans suspected of trafficking forged passports are being held by Thai police following the find.
During the raid, in the capital of Bangkok, police found a dismembered body and are now appealing for help to identify it.
Police spokeswoman Krisana Pattanacharoen said on Monday that the name, gender and nationality of the corpse found were unknown.
Forensic experts are to carry out a digital post-mortem examination to extract DNA material in an attempt to identify the person.
Krisana Pattanacharoen said the suspects were arrested on charges of resisting arrest, illegal possession of firearms and ammunition, forging official documents and concealing a corpse.
She said police are uncertain of their actual identities because they may have been using fake or altered passports.
The man with a British passport was charged, it was reported on Saturday.
Guns, ammunition, crystal meth and fake passports were also found during the raid.
A police officer was also injured as the four-storey block was searched.