At least four people were shot in the Kensington section of Philadelphia on Tuesday night.
A stretch of Richmond Street between Lehigh Avenue and Somerset Street is affected by the closure.
Ocean City police say nine Delaware men have been charged with assault in the attack of two men on the boardwalk.
Two Philadelphia police officers suffered minor injuries after their cruisers collided early Thursday morning.
Police are searching for an armed gunman who was captured on surveillance tape robbing a North Philadelphia convenience store.