(AP) - Authorities believe a wildfire in Northern California was sparked by the exhaust from a truck driven by a man delivering supplies to an illegal marijuana plot.
The California Department of Fire and Forestry Protection says 27-year-old Freddie Alexander Smoke III of Sacramento was arrested Saturday for investigation of recklessly causing a fire and illegally cultivating marijuana.
CalFire officials say the fire has burned 6 square miles, or 4,000 acres, of forested land in Shasta County and destroyed 18 structures. The fire, burning in steep terrain, was just 15 percent contained Sunday morning.
More than 1,700 firefighters, aided by aircraft, battled the blaze in hot, dry conditions.
The wildfire had prompted evacuations and road closures, but CalFire says all residents have been allowed to return home.
Still, the fire is threatening 15 homes and about 50 other structures.