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.

One of the two firefighters fatally shot in an ambush in Idaho on Sunday was from Wisconsin. A lone gunman opened fire on crews responding to a brush fire on Canfield Mountain Sunday, near Coeur d'Alene, Idaho. Kootenai County Fire and Rescue Battalion Chief Frank Harwood was born in Neenah, Wis.