The suspect who police believe gunned down two firefighters Sunday after starting a brush fire in Idaho wanted to pursue a career as a firefighter himself, his grandfather told CNN.

Wess Roley, 20, was living out of his vehicle and his former roommate said he shaved off his long hair and started to "kind of go downhill.”

The suspect who allegedly ambushed firefighters on the job Sunday in Coeur d'Alene, Idaho, had contact and a brief discussion with them before opening fire with a shotgun, killing two and critically injuring a third,