Dramatic scenes from NYC explosion

NEW YORK, NY - MARCH 12:  Firefighters from the Fire Department of New York (FDNY) respond to a five-alarm fire and building collapse at 1646 Park Ave in the Harlem neighborhood of Manhattan March 12, 2014 in New York City. Reports of an explosion were heard before the collapse of two multiple-dwelling buildings that left at least 17 injured.  (Photo by Justin Heiman/Getty Images)
NEW YORK, NY - MARCH 12:  Firefighters from the Fire Department of New York (FDNY) respond to a five-alarm fire and building collapse at 1646 Park Ave in the Harlem neighborhood of Manhattan March 12, 2014 in New York City. Reports of an explosion were heard before the collapse of two multiple-dwelling buildings that left at least 17 injured.  (Photo by Justin Heiman/Getty Images)

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    Dramatic scenes from NYC explosion

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At least eight people were killed in a blast that flattened two buildings and started a huge fire in East Harlem.