Fire fighters beside upturned Metro North Railroad train carriages
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New York train crash kills four and injures dozens

At least four people have been killed and more than 60 have been injured, many seriously, after a passenger train derailed in the Bronx area of New York City.

An eyewitness said he thought the train was going "a lot faster" than usual when it came off the tracks, just outside a suburban station near the Harlem river.

Nick Bryant reports from the Bronx in New York.

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