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FENTON, Mo. (AP) _ A 28-year-old man is facing charges for allegedly attacking a St. Louis County police officer with his prosthetic arm.

Police say Joshua Stockinger became angry Saturday at the Jim Butler Chervolet car dealership. When a St. Louis County officer arrived, Stockinger allegedly pushed the officer, grabbed him by the neck and hit him over the head with his prosthetic arm.

The officer was treated at a hospital for a cut near the temple, a bruised eye, and other injuries.

Stockinger is charged with first-degree assault on a law enforcement officer and felony resisting arrest.