A husband arrested after his wife was found dead at their home in Buri Ram, naked and with bite marks on her face, has allegedly admitted he killed her.
Nitiphot Klomthaisong, 52, was arrested while trying to flee to a relative's house in Nakhon Ratcasima province on Monday night.
Kamala Kongthaisong, 55, was found dead inside her house on Sunday. She was naked with bite marks on her face and body.
Police believed she had been dead about two days.
The dead woman's stepmother told police that Mr Nitiphot had often assaulted Kamala, and once poured hot water over her and she had to be admitted to hospital.
She had told Kamala several times to end her relationship with the man, but her stepdaughter remained living with him.
On Tuesday about 30 police took Mr Nithiphot to the crime scene, where an angry crowd had gathered, for a re-enactment of the crime.
He said he and his wife were drunk that day and quarrelled.
They had sex and then he choked her and held a pillow over her face until she stopped moving.