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CALAVERAS COUNTY — A vehicle driving on Mountain Ranch Road in Calaveras County sparked several fires in the area that have already burned 450 acres of vegetation, Cal Fire said in a press release.

Renee Hogan was arrested by the CHP at the eastern most fire, which also burned her vehicle. She was arrested on suspicion of driving under the influence of drugs.

The Willow started Sunday afternoon. By Monday morning, the fire was 30 percent contained and remained at 450 acres.

The fire is burning off Willow Creek Road and Mountain Ranch Road, east of San Andreas.

The Willow Valley subdivision was under mandatory evacuations. Those evacuations have since been lifted.