Hanoi police Sunday arrested a 26-year-old man who killed his parents after they refused to give him money for gaming and settling gambling debts.
Luu Van Thang has confessed to the killing and is being detained on murder charges, police said.
At around 11 p.m. on Saturday, Thang came to the house of his parents, Luu Van Doi, 60, and Nguyen Thi Gai, 59, in Hoang Mai District to ask them for money to cover his debts but was turned down.
Thang said his parents yelled at him and asked him to get out of the house.
Thang returned to his house, took a knife and returned to his parents' house.
As the gate was locked, he climbed a wall to get into the house.
Doi got out of his bedroom on hearing sounds and saw Thang with a knife in his hands. He tried to take the knife away from Thang, but the latter stabbed him in the stomach.
When Doi still struggled to wrest the knife from his son, he was stabbed repeatedly.
When Gai tried to intervene, Thang stabbed his mother as well.
Luu Thi Nha, Thang's 30-year-old sister who was sleeping downstairs, heard the scream from Gai and rushed upstairs.
She turned on the light and saw Gai struggling to grab the knife from Thang's hands.
As Thang loosened his hands, Gai managed to seize the knife and drop it. Nha grabbed the knife and tried to run into the front yard, but she tripped and fell.
Thang chased after her and picked the knife up before fleeing the house.
Nha rushed back and called for help. However, Doi was already dead while Gai succumbed to her injuries some minutes later.
Thang ran to his house to wash and change his clothes. He then hid in a friend's house until he was arrested the same morning.
Thang, who is married, lived near his parent's house. Police said he is game addict.
The case is being investigated further.