Derailed Train Sped, Hitting Sharp Curve

The Metro-North train was traveling three times the permitted speed, investigators say.
3:00 | 12/03/13

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Transcript for Derailed Train Sped, Hitting Sharp Curve
America's number one -- We begin with the intense investigation into the deadly train derailment in new York city new video released by the MTA overnight giving a close -- look at the scene you can see train cars toppled as rescue crews carefully searched each one. The investigation has uncovered that excessive speed likely played a factor in that crash Casey's -- Bradley has the latest. Investigators have discovered a giant clue about the -- Train jumped the tracks in the Bronx New York. They say it was imperiling into a sharp curve that nearly three times the permit its beat the train was traveling at approximately 82 miles per. -- it went into a certain amount. While it's too early to tell of the train's engineer William Rockefeller junior is at fault sources tell ABC news that human error is likely to blame. The NTSB says the train's brakes were applied until very late in the game five seconds before the train came to a stop. Four people were killed more than seven million. When I heard about the speed. -- -- It sort of takes your breath away. This new video shows recovery crews at the scene after seven cars to rails once stopping. Ten feet from the banks of the Harlem river survivor described the frightening moments like if you wheels come off. I could -- the cargo off the tracks there. -- just like the rubble from under the tracks like -- I got my face overnight a vigil at the crash site people paying their respects for the victims. The lord is your garden. Investigators say the train's brakes appeared to be operating normally the train made several scheduled stops before the derailment. The engineer now home from the hospital will be interviewed again today Jeremiah. Clearly a little bit early in the investigation but as the NTSB recovered any evidence that the engineer might have been distracted. Without looking at that they confiscated a cell phone they're going through -- they also tested his blood for drugs and alcohol. The wonder how this guy who was a twenty year veteran -- this train going so fast. All right tomorrow once again thank you so much always a pleasure to have you in studio with has a division -- -- -- -- it. Absolutely.

This transcript has been automatically generated and may not be 100% accurate.

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