Pittsburgh Police, Fire, and EMS responded to a report from a CSX conductor that an individual on the tracks was struck by one of its trains before 2:30 a.m.
Responding units located a male victim underneath a train car in the 1100 block of Muriel Street. He was pronounced deceased by medics at 2:32 a.m.
Train traffic was halted in both directions while detectives from the Crime Scene Unit processed the scene.
The investigation is ongoing.