A New York City train derailed at a downtown Brooklyn terminal during Wednesday's morning rush hour, injuring more than 100 commuters in the metropolitan area's second major rail accident since late September.

Emergency crews swarmed Atlantic Terminal after the Long Island Rail Road train went off the tracks inside the busy transportation hub at 8:20 am local time, the New York City Fire Department said.

While none of the injuries were life-threatening, at least 11 people were sent to the hospital, Deputy Assistant Chief Dan Donoghue said at a briefing at the crash site. Between 600 and 700 people were on the train, he said.

The train, arriving from the Queens neighborhood of Far Rockaway, failed to stop on time. Traveling at a fairly slow speed, it derailed after striking a bumping block, New York Governor Andrew Cuomo said at the briefing.

About 103 people were injured, the fire department said in a Twitter message. The front two cars of the six-carriage train were severely damaged. The station's partitions and bumping block, which prevents railway vehicles from going past the end of a section of track, were also damaged.

Passengers said the blood and chaos following the derailment were frightening.

"There were people crying," said Aaron Neufeld, a 26-year-old paralegal who commutes on the rail line daily. "I saw some bloody faces."

Neufeld, who was riding in the second car, said the train appeared to be approaching normally until it crashed, knocking passengers on top of one another and shattering glass windows.

"Bags went flying," he said. "People were thrown to the ground."

The engineer was probably responsible for failing to stop the train before it hit the bumper, said Tom Prendergast, chairman of the Metropolitan Transportation Authority, the agency that runs the railroad.

The train was traveling between 10 and 15 miles per hour as it approached the bumper, he said, which is standard.

"At that speed, it's pretty much the locomotive engineer's responsibility to stop the train," Prendergast said as he stood beside Cuomo at the briefing.

Investigators will interview the engineer, the conductor and brakeman to determine the cause of the accident, he said.

There were no major service disruptions for other LIRR lines at the terminal, an MTA official said.

Earlier, officials said crews were working to restore service at the terminal by the evening rush hour.

Atlantic Terminal, which also connects commuters to nine city subway lines, is one of the busiest New York stations.