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,

In the wake of the deadly ambush on responding firefighters in Coeur d'Alene, Idaho, the suspect's grandfather spoke to ABC News on Monday.