New details are emerging about the 20-year-old suspect that police say started a brush fire and then began shooting at firefighters responding to it in an ambush-style attack. Police say he has no criminal record and likely used a shotgun before dying from a self-inflicted wound six hours after the shooting began.

The man suspected of shooting two firefighters dead and wounding a third after setting a blaze along a popular mountainside trail in Idaho was described by authorities on Monday as a young drifter whose motives remained a mystery a day after the ambush attack.