PRENTISS TOWNSHIP — The state Fire Marshall’s Office charged a Prentiss Township man with arson after he allegedly set fire to a state fire marshal investigator’s vehicle.

Sgt. Timothy York had parked his state-owned 2009 Chevrolet Impala off the Aurora Road in the tiny northern Maine township as he and two other investigators probed three fires that had been set in the past 10 months.

When York returned at 12:30 a.m., he found his car had been doused with a flammable liquid and ignited. The fire burned the car as well as some of York’s personal belongings that were inside, authorities said.

Fire investigators, state police, wardens and Penobscot County sheriff’s deputies responded and a police dog tracked a scent to the property of John Weckerly, 53, about a half-mile away from the fire.

He was arrested without incident, but has not been charged in the previous fires, two of which damaged a garage, last November and July 3, and one a seasonal camp, which was reported July 20. Those investigations continue.