Overview

• The collapse occurred shortly after 1 p.m. local time at 4 Calle Hileras in Ópera inside a six‑storey structure from 1965 being converted into a four‑star hotel.
• Emergencias Madrid reports three injured construction workers—two with minor contusions and one hospitalized with a leg fracture—while four colleagues remain unaccounted for.
• Firefighters say several interior floor slabs failed in a progressive internal collapse; the cause is unknown and under investigation.
• A major response of at least 11 fire units with SAMUR, National and Municipal Police, canine teams and drones secured a wide perimeter and evacuated neighboring buildings.
• Interior searches began after structural stabilization, with authorities cautioning the operation could take many hours or days as early, conflicting casualty tallies are clarified.