Investigators say Roley intentionally set the fire to ambush the fire crew on Sunday and was perched in a sniper position, firing at the firefighters, according to the AP. They took cover behind firetrucks, but two died and a third was wounded during a barrage of gunfire over several hours, authorities said.

Authorities on Monday confirmed the identity of the suspect found dead on Canfield Mountain on Sunday as 20-year-old Wess Roley, reports CNN. The suspect is believed to be the only shooter involved in the deadly ambush on firefighters in Idaho Sunday,