A devastating pre-dawn inferno tore through a multi-unit residential structure in Brooklyn’s Sunset Park neighborhood on Thursday, leaving at least six people confirmed dead and seven others sustaining injuries of varying severity, according to official statements from the New York City Fire Department (FDNY). First responders received the first alert of the rapidly spreading blaze shortly after 1:40 a.m. local time, prompting the deployment of over 230 firefighters, paramedics and emergency medical technicians to the scene to battle the flames and conduct life-saving search and rescue operations. Upon arriving at the address, emergency crews found the building’s ground and second levels fully engulfed in heavy, fast-moving flames that had already begun spreading upward to upper residential units. During initial sweeps of the burning structure, teams recovered the remains of four deceased individuals trapped inside the building. Two additional victims were pulled from the site in critical, life-threatening condition, but succumbed to their injuries shortly after extraction; local news outlets have not yet confirmed definitive details on whether those two fatalities occurred en route to nearby medical centers or after arrival at hospital care facilities. The seven surviving injured parties are currently receiving treatment, with their conditions spanning from minor smoke inhalation and superficial burns to severe trauma requiring intensive care. As part of standard on-site safety protocols, a dedicated hazardous materials response unit was dispatched to the location after crews detected the presence of lithium-ion battery materials in the affected building. At this stage of the investigation, officials have explicitly stated there is no confirmed causal link between the lithium-ion batteries and the ignition of the massive blaze. A full, multi-agency probe into the exact origin and contributing factors of the fire remains active, with FDNY fire marshals reviewing physical evidence, witness statements and building records to determine how the deadly fire started. The FDNY has not yet released additional public details on the incident, following requests for further clarification from media outlets including the BBC’s U.S. news partner CBS News.