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.”

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.

Authorities identified the suspect as Wess Roley. Kootenai County Sheriff Bob Norris said it appeared he had been living in his car, and authorities did not know why he was in the area. Roley, who dreamed of becoming a firefighter himself, was found dead on the mountain from a suspected self-inflicted gunshot wound.