Pittsburgh Bureau of Police officers responded to a report of a vehicle crash near the intersection of 7th Avenue and Penn Street around 3:20 p.m. One of the drivers tried to leave the scene and struck an elderly male victim. Zone 2 officers responding to the initial crash stopped the driver at Fifth Avenue and Market Street. Medics transported the victim to a local hospital in stable condition. The driver, Frederick Clark, was arrested for DUI. Police are investigating.