A teenager has been arrested after Pizza Delivery Driver is attacked and robbed. Police were called just after 1 A-M Saturday morning to Preston Street for a report of an armed robbery. Officers say a large group blocked the street so the pizza delivery driver couldn't get by. Then one man opened the door and attacked the delivery man....robbing him of cash. A short time later, officers found the suspect on Murray Avenue...18-year-old Wesley Humphrey of Worcester.