At least 37 people have been killed and more than 40 injured after a Russian drone struck a warehouse in Myla, west of Kyiv, triggering a huge fire followed by a series of ammunition explosions, according to Ukrainian authorities and reports by CNN.

The attack late Friday caused detonations that continued for hours, damaging dozens of homes and a facility housing elderly people and persons with disabilities. More than 380 residents, including 59 children, were evacuated from the affected area as emergency crews battled the fires and searched the wreckage.

CNN reported that Ukrainian President Volodymyr Zelensky said the facility contained shells, mines, other ammunition and drones, while authorities opened a criminal investigation into how explosive materials came to be stored so close to residential areas.

Zelensky described the storage arrangement as a case of serious negligence and said those responsible would be held accountable. Ukrainian Prime Minister Serhii Koretskyi similarly called for punishment, while prosecutors investigate possible violations of regulations governing the storage of ammunition.

The incident has also intensified scrutiny of Ukraine’s weapons-storage practices, coming weeks after another Russian strike on an ammunition facility in Vyshneve, near Kyiv, caused deadly secondary explosions. The United Nations said international humanitarian law requires precautions to protect civilians, including avoiding the placement of military objectives such as ammunition near densely populated areas.

Meanwhile, Russia’s Defence Ministry said its forces had struck an ammunition warehouse in Myla containing components and launch boosters for long-range drones, while Ukrainian authorities continued rescue and recovery operations. The Kyiv region has declared Sunday, August 30, a day of mourning for those killed in the attack.