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.

Wess Roley, 20, was found dead with a gun nearly six hours after the attack, and investigators say he acted alone, according to the Associated Press.

A sheriff says a man shot firefighters battling a blaze in northern Idaho after they asked him to move his vehicle, killing two of them and wounding a third