New York City Mayor Bill de Blasio and other city officials said investigators had ruled out a gas leak as the cause of the blast, but they stopped short of calling it a bombing and declined to specify precisely what they believed may have triggered the explosion. Neha Jain, 24, who lives in the neighborhood, said she was sitting at home watching a movie when she heard a huge boom and everything shook. CNN, citing law enforcement sources, reported that the device appeared to be a pressure cooker with wires attached to it and connected to what resembled a cell phone.

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