A man turned himself in to the Ho Chi Minh City police Tuesday claiming he had stabbed his wife to death the previous night for refusing to have sex with him.
Tran Hoai Son, 28, told them he had drunk with his friends at his rented room in District 3 Monday night, went to bed, woke his wife up and demanded sex.
But Doan Thi Xuan Thuy, 22, refused and returned to sleep.
He ran into the kitchen, got a knife and stabbed her twice.
The wife was rushed to a hospital but succumbed to the injuries.
Son and Thuy, both from the central province of Phu Yen, moved to HCMC years ago and had earned their living by selling lottery tickets.
They and their two children shared a rented house with other immigrants inside a market on Vuon Chuoi Street.
Investigations are continuing.