Police responded to the 2000 Blk of Penn Avenue for a report of an accident. On location, a witness advised the driver of the striking vehicle was seen walking to the rear of a near by residence. Police located the driver, identified as Richard Knoll, walking out of a garage. The driver appeared disheveled and was slurring his speech. The driver denied drinking alcohol, but had consumed medication. Blood was drawn and the driver was later arrested for DUI.