The new Atlantic Terminal Pavilion of the Long Island Rail Road is seen from outside January 5, 2010 in Brooklyn.
LIRR spokesman Mike Charles said the first two wheels of a train going eastbound from the Atlantic Terminal in Brooklyn derailed at 4:40 p.m. on Thursday. He said nobody was injured.
Investigators are trying to figure out what caused the derailment.
Limited LIRR service has been restored between Atlantic Terminal and Jamaica Station with heavy delays expected.