FENTON • An angry customer at a car dealership who used his prosthetic arm to attack a police officer has been charged with assault, authorities say.

The incident happened at about noon Saturday at Jim Butler Chevrolet after Joshua Stockinger, 28, returned a rented vehicle he had been using while the dealership was working on his car, according Sgt. Shawn McGuire of the St. Louis County Police Department.

Stockinger had threatened employees over the phone before showing up at the dealership, McGuire said. An employee of the dealership, at 759 Gravois Bluffs Boulevard, called police before Stockinger arrived.

When he got to the dealership, Stockinger caused a disturbance in the showroom and employees asked him to leave, police say.

As Stockinger walked to his car, a police officer arrived. Stockinger allegedly pushed the officer, grabbed the officer by the neck and started hitting the officer over the head with his prosthetic arm, McGuire said.

The officer suffered a cut above his temple, bruising to his right eye, a cut on his elbow and abrasion on his wrist. He was treated at a hospital and released.

Stockinger, of the 100 block of Parkhill Terrace, is charged with first-degree assault on a law enforcement officer and felony resisting arrest.

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