Authorities in Coeur d'Alene, Idaho, shared updates on their investigation after a suspect ambushed firefighters on the job.

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.

Coeur d’Alene is in northwest Idaho, about 30 miles east of Spokane. It is known for its outdoors activities, and is near the large Coeur d’Alene Lake, national forestland and mountains, including Canfield Mountain. The mountain features both public and private lands and trails for hiking, mountain biking and motorcycling.