An Idaho volunteer firefighter has admitted to authorities he deliberately started a wildfire near Robie Creek in Boise County.

18-year-old Nathanial Bartholomew told police he started the now-100-acre-and-spreading blaze to get the attention of his father, who is a firefighter. The Karney Fire, as it is being called, has destroyed mostly pine trees and brush, but could threaten nearly 100 homes and structures in the communities of Robie Creek and Wilderness Ranch Northeast of Boise. The fire is currently only 15 percent contained and dozens of firefighters and aerial units are battling it.

Bartholomew was arraigned on felony charges for setting the fire, which sprung up Monday afternoon.  Police arrested him while he was on the fire line, manning a hose. Authorities did not say how he set the blaze.

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