Unified police are looking for a man accused of critically injuring his stepfather after allegedly ramming him with his car.

TAYLORSVILLE — A Taylorsville man was arrested Thursday after police say he assaulted his stepfather and left him in critical condition.

Just after 10 p.m. Wednesday, officers were called to 4734 S. 2700 West. Mark Peterson, 32, was staying there in his stepfather's home and got into a fight with the 51-year-old man, said Unified Police Lt. Justin Hoyal.

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A verbal argument inside the house continued outside and became physical, Hoyal said. Peterson got into his car, which was parked on the street next to the curb, and was preparing to leave when the stepfather stepped between the front of Peterson's Chevrolet Malibu and a Ford Ranger, reportedly to get a license plate number.

The Chevrolet was put into gear and moved forward, pinning the stepfather between the two vehicles, Hoyal said. Peterson then drove off. The stepfather, whose name was not released, was taken to Intermountain Medical Center in critical condition with significant injuries to both legs.

Thursday afternoon, Peterson turned himself in to police.

According to state court records, a woman filed for a protective order against Peterson in Ogden's 2nd District Court in May.

— Pat Reavy