October 4, 2010 6:18 pm Alleged Armed Robber on the Run An alleged gunman held up three convenience stores and exchanged fire with police in Northeast Philadelphia. Investigators were on the search Monday for 20-year old Joseph Brock. US & World Videos 1:32 Police search for man accused of kidnapping woman at knifepoint outside Bucks County Wawa 1:12 Police investigate a shooting in Elsmere that left a 17-year-old boy in critical condition 2:47 Judge ordered the city to reinstate an officer after his murder charges were dropped 2:47 Protesters continue to hold an encampment on UPenn's campus as officials discuss basis for possible arrests 0:20 Officials investigate a deadly crash on the 202 Parkway involving a semi-truck