A man shot and killed three of his family members before turning the gun on himself at a home in north metro Denver on Friday night, Thornton police said.
officers found four people “obviously deceased” in home in the 3900 block of Harrison Street at around 8 p.m., near 140th Avenue and Colorado Boulevard.
Officers responded to the home after another family member called 911 because they could not reach the family by phone and, when they stopped by the house, could see people inside who were not responding, police spokesperson Kylynn McTague said.
The victims — a man, woman and juvenile male — were all found with gunshot wounds. Investigators believe the fourth person, a 33-year-old man, fatally shot the three victims before dying by suicide, Thornton police said.
The names of the victims and suspect will be released after they’re identified by the Adams County Coroners Office.
Anyone impacted by the shooting who needs support can contact the police department’s victim services unit at 720-977-5150 or find support through the Suicide and Crisis Lifeline by calling or texting 988.
Anyone with information about the case can contact the Thornton Police Department tip line at 720-977-5069.
Updated 2:30 p.m. May 23, 2026: Because of a reporter’s error, a previous version of this story misreported which day the shooting took place. The story has been updated.
