A gunman fatally shot two firefighters and critically wounded a third who were responding to a brush fire near Coeur d’Alene, Idaho, on Sunday, according to officials.Hours after what officials described as first responders coming under “active sniper fire” at about 2 p.

An alert by the Kootenai County Emergency Management Office asked people to avoid the area around Canfield Mountain Trailhead and Nettleton Gulch Road.

A brush fire was set deliberately so a sniper could ambush firefighters, authorities said.