Firefighters were ambushed by a gunman while responding to a brush fire in Coeur d'Alene, Idaho, on Sunday, according to the local sheriff's office.

The Kootenai County Sheriff’s Office has confirmed that the suspect in the Canfield Mountain shooting, which killed two Idaho firefighters, also intentionally started the fire that brought emergency crews to the area.

A 20-year-old man's life appeared to have begun to unravel in the months before law enforcement say he fatally shot two firefighters and severely wounded a third as they responded to a wildfire near Coeur d'Alene,