Two firefighters were killed Sunday and another was wounded when they were ambushed by sniper fire while responding to a blaze in a northern Idaho mountain community, as crews endured a barrage of gunfire over several hours that the governor called a “heinous” assault, Associated Press reported.

A shelter-in-place order was lifted Sunday night after a tactical response team discovered the body of a man with a firearm nearby, the Kootenai County Sheriff’s Office said. Officials did not release his name, nor did they say what kind of gun was found.

Authorities planned a news conference later Sunday to provide more information.

Sheriff’s officials said crews responded to a fire at Canfield Mountain just north of Coeur d’Alene around 1:30 p.m., and gunshots were reported about a half hour later, according to Associated Press.