Wilkinsburg FireFighters responded two nights in a row to multi vehicle accidents each involving a fatality. On Saturday morning, Sept.4th they responded to interstate 376 eastbound to find an accident involving two cars, a tractor trailer and a motorcycle. The occupant of the motorcycle was killed on impact and firefighters extricated one occupant from a vehicle. On Sunday morning, about 24 hrs later, they reponded to the same area only west bound to find two vehicles involved in a violent accident in which one of the occupnts was killed instantly by the collision. The interstate was shut down for several hours both evenings while the PA State Police conducted their investigation.