A gas explosion and fire that ripped off the facade of a three-story building in New York on Saturday, killing one person and injuring three, might have been caused by a tenant moving out a stove, fire officials said. More than 200 firefighters battled the four-alarm blaze in the borough of Brooklyn after it was reported to the New York Fire Department at 1:05 p.m., Mayor Bill de Blasio and Fire Commissioner Daniel Nigro told a news conference. Police said first responders found an unidentified woman dead in the stairwell of the building.