Iowa City police said they arrested a man after he allegedly threatened a witness at the Old Capitol Mall.

Johnny B. Potter III, 18, address unknown, was charged Jan. 27 with tampering with a witness.

According to police reports, Potter was cited and released for fifth-degree theft after he was identified as one of three subjects who allegedly took $9 from an alleged victim at the mall.

The alleged victim told police that Potter, and a codefendant Spencer Porter, returned to the mall and threatened the victim with physical violence if he did not drop the charges.

Potter had left the mall when police arrived; they later arrested him, the report said.

—by Hayley Bruce