Six adults died and nine people were injured, including three firefighters and two police officers, when a three-alarm fire tore through a two-story row house in Brooklyn's Sunset Park neighborhood early Thursday morning.

The FDNY received reports of the blaze around 1:40 a.m. at a home on 58th Street between Sixth and Seventh avenues. More than 200 first responders arrived within minutes to find heavy fire on every floor and blowing out windows. Firefighters rescued four people by entering through a rear door, but four victims were pronounced dead at the scene and two others died at the hospital after being transported with critical injuries.

The fire was brought under control in approximately three hours and also damaged an adjoining home. Four additional civilians suffered non-life-threatening injuries, and the nine total injured individuals are expected to survive.

Fire marshals are investigating the cause. A lithium-ion battery, or possibly two, was found at the scene, though officials have not confirmed any connection to the ignition. Such batteries have been linked to a rising number of fires nationwide, often associated with e-bikes and chargers.

Mayor Zohran Mamdani described the incident as devastating and noted the neighborhood would need time to mourn and recover. No victim names or ages have been released. The American Red Cross is assisting displaced residents with temporary housing.

Property records indicate the home was built in 1915 and was sold several years ago. Earlier complaints to city officials referenced unauthorized work in the basement, though the impact on the fire remains unknown.

The rapid response prevented further spread, but the tragedy highlights ongoing challenges with older wood-frame buildings and potential hazards from modern battery technology.