What began as a routine response to a brush fire on northern Idaho’s Canfield Mountain turned into a deadly attack Sunday after firefighters reported someone shooting at them while they battled the flames.

Three victims were transported to Kootenai Health, though two were dead on arrival, according to hospital spokesperson Kim Anderson. One of the deceased was a firefighter from the Coeur d’Alene Fire Department and the other was a firefighter from Kootenai County Fire and Rescue.