The Las Vegas police lieutenant who killed his wife, son and himself was Hans Pieter Walters, who died of a self-inflicted gunshot wound to the head, the Clark County Office of the Coroner/Medical Examiner said in a statement Tuesday.

Walters told a dispatcher Monday that he had shot his family and threatened to set his home on fire and harm any officers who responded, authorities said. When police arrived, they found the family‚Äôs Boulder City, Nev., home partially engulfed in flames and Walters in the doorway with a gun. He ignored police commands and went back into the house, authorities said.

When a SWAT team entered the home, they found Walters,  his 46-year-old wife, Kathryn Michelle,  and their 5-year-old son, Maximilian, all with fatal gunshot wounds to the head.