A deranged former police officer slaughtered at least 35 people, including 24 sleeping children and a pregnant woman, in an unthinkable rampage at a Thailand nursery Thursday — before driving home and killing his wife and own child and taking his own life, officials said.

Panya Kamrab, 34, who was canned from the police last year for drug use, flew into a rage when he arrived at the childcare center in the town of Nongbua Lamph and realized his kid was not there, according to the BBC, citing local officials.

The attacker, who was armed with a shotgun, pistol and knife, had attended a court hearing on a drug charge before going on the bloody rampage, a police spokesperson told reporters.