Gas explosion in Valdemoro apartment building kills three dogs and leaves no human injuries

Blast in the Hospital neighbourhood

A gas explosion occurred around 08:25 on Wednesday morning, 7 October 2026, inside a residential property in Valdemoro, a municipality in the Community of Madrid. The event occurred within a newly constructed gated residential complex situated at number 24 Avenida de los Reyes Católicos, located in the local Hospital district. Initial accounts from emergency services indicated that the blast took place on either the first or second floor of a four-story residential block. The explosive force caused severe structural and material destruction to the primary apartment, while also damaging the units situated directly above and directly below the point of origin. Smoke and flames rising from the residential block were visible to drivers traveling along the nearby M-423 road.

Firefighting operations and building evacuation

Emergency dispatchers from Emergencias 112 Comunidad de Madrid coordinated a rapid response to manage the post-blast blaze and secure the perimeter. Six fire crews from the Bomberos de la Comunidad de Madrid deployed to the property to extinguish the active flames and prevent further structural hazards. Emergency responders evacuated the four-story residential block as fire crews worked to contain the interior fire. Officers from the Guardia Civil and local police forces secured the immediate perimeter around Avenida de los Reyes Católicos to assist the operation. Firefighters managed to bring the blaze completely under control after extinguishing the core flames across the affected floors.

Impact on residents and animal casualties

Officials from Emergencias 112 Comunidad de Madrid confirmed that no residents or human bystanders sustained physical injuries in the explosion or the fire. The primary casualties of the incident were four dogs that were located inside an attic apartment at the top of the affected residential block. All four animals suffered severe smoke inhalation and toxic fume exposure as the fire moved through the upper parts of the structure. Emergency personnel attempted field resuscitation on the animals immediately after rescuing them from the attic. Three of the dogs died at the scene, while emergency workers revived a fourth dog that had entered cardiorespiratory arrest. Responders subsequently transferred the surviving dog to a local veterinarian for ongoing medical monitoring.

Medical care and ongoing inquiry

Medical support teams from the SUMMA 112 emergency service deployed to the site on Avenida de los Reyes Católicos in a preventive capacity. While medical personnel treated no physical trauma among human residents, SUMMA 112 psychologists provided immediate psychological support to the owner of the dogs. The owner suffered an acute anxiety crisis following the death of three of her pets in the residential blaze. Municipal authorities, building inspectors, and emergency investigators remained at the scene after the fire was extinguished. Technical specialists continue to examine the damaged structure and the internal utility installations to determine the precise cause of the gas explosion.