In Bronx eplosion New York city fire Chief killed,

Fire in New York city,

The explosion occurred after firefighters responded to a report of a gas leak at a building in the Kingsbridge neighborhood of the 

Bronx,A New York City fire department chief was killed and several other people were injured, including first responders, in an explosion in the Bronx Tuesday morning that appeared to be linked to a drug operation, officials said.

Firefighters responded shortly before 6:30 Tuesday morning to a report of a potential gas leak at 300 West 234th St. in the Kingsbridge neighborhood, a fire department spokesman said.

Upon arrival, firefighters discovered what appeared to be a drug operation at the building, and reported it to police at 7 a.m., law-enforcement officials said. Firefighter will recover soon.A law enforcement source tells NBC 4 New York officials believe the home was a marijuana growing operation. Flammable materials like propane are used to manufacture the drug, but the alleged pot growhouse would be the first such drug lab to blow up in the city, the law enforcement source said.