Bio & Incident Details
Tour: 7 years, 6 months
Badge # Not available
Cause: Vehicular assault
Incident Date: 8/15/1977
Suspect: Charged with homicide by motor vehicle
Corporal Leo Koscelnick was killed when he was struck by a vehicle while helping a stranded motorist, Mary Fleming of Wayne. Corporal Koscelnick and the tow truck operator, James Della, were standing on the side of the Schuylkill Expressway next to the disabled vehicle when another car attempted to illegally pass a vehicle on the right and lost control of his car, which struck Trooper Koscelnick and the truck operator, killing them both.
The driver, David Sylvester, had been en route to his grandfather's funeral. He was not injured, but was arrested and charged with homicide by motor vehicle.
Corporal Koscelnick had been with the agency for seven and a half years. He had also served with Company C, 2nd Battalion, 109th Infantry of the Pennsylvania National Guard. He was survived by his wife.