"This is preliminary information from the event recorders, shows that the train was traveling at approximately 82 miles per hour as it went into a 30 mile an hour curve," the NTSB's Earl Weener announced at a Monday afternoon press conference.
Investigators plan to talk with the driver and conductor of the train as well.
The conductor has said there was a problem with the brakes as the train entered a sharp turn along the Harlem and Hudson Rivers.
There were about 100 people riding the train at the time of the crash.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.