Police say a man in northern Thailand stormed in to a neighbour's home, hacked five children to death and inflicted multiple stab wounds on a pregnant woman who was looking after them.
Police spokesman Sombat Kalasuk said the 24-year-old man had a history of mental illness and was living with his family while being treated for depression at a local hospital.
He apparently became agitated by the noise coming from his neighbour's home in a village outside the northern city of Chiang Mai and grabbed a 19-inch kitchen knife which he then used to kill the children.
All five children were believed to be under the age of eight. A woman who is seven months pregnant and was looking after the children is being treated for wounds to her face and body.