A 53-year-old Swiss man admitted to police that he accidentally strangled his Thai wife during an argument, but police found a playing card lodged in her throat.
The man, identified only as Roland, told police during his five-hour-long interrogation on Monday that the incident occurred amid a heated argument with his wife Orathai Posee-ngarm, 46.
Roland initially visited the police station in Nakhon Ratchasima on Monday to get his previously confiscated passport.
The man told police that he carried Orathai's body on a motorcycle and dumped it in a cornfield in Khon Buri district. The field is about three kilometres from their home.
Further examination of the body revealed not only the playing card in the throat but also traces of adhesive tape on the mouth.
The woman's father said he was heartbroken and also furious at Roland because his family had treated him well.
Orathai had gone missing from her home on Jan 8.
The woman had inherited about 13 million baht from her first Swiss husband, who died in 2021. After marrying Roland, the couple moved to Thailand two years ago.