Smoke rose slowly above the Havana district before sunrise, drifting between aging apartment balconies and tangled electrical lines while residents gathered in narrow streets below. In neighborhoods where buildings carry decades of memory within worn walls and fading paint, the sudden arrival of fire transformed ordinary silence into sirens, hurried footsteps, and voices calling through thickening air. A major fire broke out at a residential building in Havana, prompting emergency evacuations and a large-scale response from firefighters and medical crews. Authorities confirmed that several residents required treatment for smoke inhalation while emergency teams worked through the early morning hours to contain the blaze. Cuba Debate reported that the fire spread rapidly through upper floors of the building, forcing residents to flee through smoke-filled stairwells as firefighters arrived at the scene. Witnesses described hearing shouting and breaking glass before flames became visible from nearby streets lined with parked vehicles and small storefronts. Emergency responders established safety perimeters around the affected district while firefighters used ladders and water hoses to prevent the blaze from reaching neighboring buildings. Residents watched from sidewalks beneath flashing lights as smoke drifted across rooftops and dim apartment windows overlooking the narrow avenue. The atmosphere remained tense yet orderly as families gathered outside carrying bags, pets, and personal belongings rescued during the evacuation. Elderly residents sat quietly beside ambulances while volunteers distributed drinking water and temporary assistance to those displaced by the fire. Authorities stated that electrical failures and aging infrastructure remain ongoing concerns in several densely populated parts of Havana, where older residential buildings often require extensive maintenance. Investigators began examining the structure after the flames were brought under control, though officials have not yet confirmed the exact cause of the incident. Throughout the district, nearby businesses delayed opening while utility workers inspected electrical connections and smoke damage affecting surrounding structures. Some residents returned briefly under supervision to retrieve essential belongings from lower floors untouched by the fire. As daylight spread across the city, firefighters continued extinguishing smaller hotspots hidden within damaged walls and collapsed sections of the building. The smell of smoke lingered heavily through nearby streets while cleanup crews prepared barriers around unstable areas of the structure. Authorities confirmed that investigations into the fire remain ongoing. Emergency housing assistance and safety inspections continue for affected residents as recovery efforts proceed across the Havana district.