See Photo: Mentally ill man hacks five children to death, stabs pregnant woman

Police say a man in northern Thailand stormed into a neighbour's home, hacked five children to death and inflicted multiple stab wounds on a pregnant woman who was watching them, AP reports.

Lt Col 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 47-centimetre kitchen knife which he then used to kill the children. All five children were believed to be under the age of 8. The woman who is 7 months pregnant is being treated for wounds to her face and body.