Early this morning, a Metro-North train derailed in the Bronx, claiming the lives of at least four people and injuring at least 67 others. Of the injured, 11 were in critical condition.

The train reportedly left Poughkeepsie at 5:54 a.m. before derailing at 7:20 a.m., taking what witnesses called "a really hard turn" as it hit a curved portion of the track by the Spuyten Duyvil station. Councilman G. Oliver Koppell told the New York Times that the crash was "certainly the worst one on this line." 

Metropolitan Transportation Authority spokesman Aaron Donovan said the specific cause of the derailment remains unknown, but a "detailed investigation" will follow.

Gawker points out that this is the same spot where a CSX freight train derailed back in July, forcing crews to rebuild 1,500 feet of the track. 

[via Gawker, New York TimesABC New York and CBS New York]