Investigators believe the fire was set intentionally to lure in the firefighters. Other first responders react to shootings.

Idaho authorities confirmed that a sniper who lured firefighters to a blaze they believe he set to ambush them had acted alone and had been found dead.

A man who had intentionally set the fire to ambush the crew on Sunday was perched in a sniper position, firing at the firefighters. They took cover behind fire trucks, but two died and a third was wounded during a barrage of gunfire over several hours, authorities said.