Baltimore police say an officer shot and wounded a 13-year-old who refused to drop a BB gun that was a replica of a semiautomatic pistol, the AP reports. Commissioner Kevin Davis says two detectives were driving in West Baltimore when they saw the teen carrying what appeared to be a gun. Davis says the officers identified themselves, and the teenager took off running. Officers caught up with the teen and ordered him to drop the gun. Davis says the teen didn't drop it, and one officer shot him in the leg. The commissioner says he looked at the replica after the shooting and could not tell it wasn't a real gun. The teen is expected to survive. (More police shooting stories.)