http://www.bbc.co.uk/news/world-us-canada-25177104
As it happened: Bronx derailment
Key Points
Four people died and 63 were injured, 11 of them critically, when a train derailed in New York City
Several of the Metro-North train's carriages came off the tracks in Bronx area at 07:20 (12:20 GMT)
Investigators are looking into reports that the train was travelling too fast. All times GMT
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