The man who police believe killed two Idaho firefighters responding to a brush fire after starting the flames himself had wanted to pursue a career in the fire service, his grandfather told CNN.

A northwest Idaho community is still reeling after a 20-year-old man was suspected of fatally shooting two firefighters and injuring another after intentionally starting a fire to ambush them.

Wess Roley once lived in Phoenix, with some of his family still living in the area, according to court records and social media posts.