The cause of an 81-acre wildfire last week just south of Carson City was accidental, investigators said.
Officials blamed Monday's Voltaire Fire on a pickup truck that malfunctioned and said vehicle owner Damon Smith, 35, of Carson City, would not be liable for firefighting costs.
Details of the malfunction were not available.
Smith tried to put out the fire and suffered burns to both hands, said U.S. Forest Service spokeswoman Christie Kalkowski. He also lost personal possessions when his truck burned.
Smith was taken into custody the same day for unrelated Lyon County warrants.
The fire started Monday afternoon about a third of the way up Voltaire Canyon off highways 50 and 395. It was put out the next day.
No homes were threatened and no injuries were reported.
The blaze burned next to a wildfire that blackened 1,200 acres in June.
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