The husband, Rung-aroon Srichaimool, 32, waited for police at the house in Kao Jan Community in Tambon Mak Khaeng and he was arrested at 2.10am. 
He is accused of stabbing Somthawil Moolramad, 55, on the left side of her chest. She was killed on her bed while she was dressing to go out, police said. 
Police said Rung-aroon, had been drinking with Somthawil and their friend from Friday night until the early hours of Saturday. 
An argument began when Somthawil was getting ready to meet her new boyfriend, before Rung-aroon grabbed a kitchen knife and stabbed her.

Husband arrested for allegedly stabbing wife to death in Udon Thani

A husband was arrested early Saturday for allegedly stabbing his wife to death at their house in Udon Thani's Muang district after she tried to leave home to see her new boyfriend, police said.