Train Crash in New York, Bronx

file not foundFour people so far have been killed and 63 injured after a passenger train derailed north of New York city, according to Sky sources.

The Fire Department of New York (FDNY) said 135 firefighters were at the scene of the derailment close to Spuyten Duyvil station in the Bronx on Sunday, with reports of "multiple injuries".

Emergency services were "assisting with rescue and treatment of patients" at the scene of the accident. It was unclear how serious the injuries were.

Derailed train in the Bronx, New York

The accident took place at 7.20am on the Poughkeepsie to Grand Central Station Metro-North train around 100 yards north of the station.

The Metropolitan Transport Authority (MTA) said four or five carriages on the seven-carriage diesel train had derailed on a curved section of track, but none entered the adjacent Hudson or Harlem rivers.

Spokeswoman Marjorie Anders confirmed there were fatalities and said the accident occurred in a slow speed area. She added the train black box would reveal how fast the train was travelling.

It added the crash was reported by an engineer, but it was unclear if any of the train crew were injured.

Witness Edwin Valero was in an apartment building above the scene when the train derailed.

He said at least one carriage stopped just feet from the edge of the water. Initial reports had suggested some of the carriages may have been submerged.

Footage of the crash scene showed divers in the water.

Eyewitness Rebecca Schwartz told Sky News: "I was walking in the park across the water from the train station, and I saw multiple-cars derailed, at least one very close to if not in the water, and many, many emergency vehicles pouring onto the scene."

Joel Zaritsky woke up as his carriage rolled off the track.

He said: "I was asleep and I woke up when the car started rolling several times. Then I saw the gravel coming at me, and I heard people screaming.

"There was smoke everywhere and debris. People were thrown to the other side of the train."

He added that passengers were taken off the train, with dozens bloodied and scratched and holding ice packs to their heads.

A statement from Metro-North said: "Rescuers are ascertaining the extent of injuries, and we will update information throughout the day."