Carlo Allegri / Reuters
At least four people were killed and 63 others were injured when a Metro-North train jumped the tracks as it was rounding a curve about 100 yards from a stop.
The NTSB says a New York train was speeding just before it derailed Saturday and killed four people. Investigators have yet to determine if operator error is the cause behind the deadly crash.
Investigators announced Monday that speed was a factor in the Metro North train crash that killed four and injured 63 at the Spuyten Duyvil curve in the Bronx. Along that stretch of the Hudson line, trains can run 70 mph, but as they enter the curve they are supposed to slow to 30 mph. NBC's Tom Costello reports.
Dozens remain hospitalized where doctors are treating everything from broken bones to spinal cord injuries. NBC's Katy Tur reports.