Maryland State Police are currently searching for a man who attacked a worker along the Baltimore-Washington Parkway this afternoon, shutting down traffic near the intersection of Interstate 195. The man, reportedly upset over a speed camera, emerged from the woods near the road armed with a sledgehammer and a shotgun, and began to hit a vehicle with the hammer. The suspect also attacked a speed enforcement worker on the side of the road before disappearing into the woods. No shots were fired in the incident.