GRAVESEND, Brooklyn (WABC) -- Authorities say it was an explosion triggered by a natural gas leak that sparked a house fire in Brooklyn Saturday.
The blast occurred when someone inside turned on a light switch.
The FDNY received a call at 8:18 a.m. for a fire in a two-story multi-family house at 151 Bay 49th Street in the Gravesend section.
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The fire was quickly placed under control at 8:31 a.m.
One person suffered serious but non-life-threatening injuries and was taken to Staten Island University Hospital North.
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Three people were attended to at the scene.
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