More details are surfacing this evening into the man killed by a train near MOPAC and Braker Saturday night. Austin PD tells us they responded to the 9400 block of Neils Thompson just after 8. A white male possibly in his 30's was reportedly sitting on the tracks. Officers tell us the train didn't see him until he stood up. The train engineer says the man adjusted his backpack and continued to walk northbound as the train was coming. The man was pronounced dead on scene. Police aren't sure yet if the man was intoxicated, if this was a suicide, or simply an accident.