A man in the southern province of Tay Ninh allegedly set his house on fire, killing himself and his three children, after an argument with his wife Sunday.
Nguyen Hoai Tam, 33, locked the house from inside, doused it with gasoline and set fire to it when his three children, aged 7, 10 and 12, were sleeping late at night.
When the police arrived at the scene the occupants had already burned to death.
According to neighbors, Tam, his wife and children came to Tan Bien town a few months ago and rented the house.
The couple are casual workers.
A day before the tragedy, they had an argument, according to the neighbors. The woman then left the house.
The police are investigating.