At least two people were killed and around 20 others injured after a large-scale Ukrainian drone attack targeted Moscow and the surrounding Moscow region, Russian authorities said on Sunday, September 20, 2026. The attack also damaged an oil refinery and several residential buildings.

Moscow Mayor Sergei Sobyanin said Russian air-defence forces had intercepted more than 1,600 drones since Saturday, including about 450 drones heading toward Moscow. Russia’s Defence Ministry separately reported that 1,110 Ukrainian drones were shot down overnight across Russia, Crimea and the Black Sea.

The Moscow Oil Refinery was among the sites affected. Authorities said several drones reached the refinery’s premises and damaged part of the facility. The refinery processed approximately 11.6 million metric tons of crude oil in 2024, making it an important part of Moscow’s fuel infrastructure.

Moscow regional Governor Andrey Vorobyov reported that two people were killed in separate incidents in the wider Moscow region. Residential buildings were also damaged, while a fire at a 21-storey apartment building led to the evacuation of about 400 residents, including 70 children.

The attack came on the final day of Russia’s parliamentary elections. Sobyanin accused Ukraine of attempting to disrupt the voting, although Ukraine has not formally commented on the latest allegations. Claims from both sides remain difficult to independently verify amid the ongoing war.

The latest strikes highlight the continued expansion of long-range drone warfare between Russia and Ukraine, with energy facilities and other infrastructure increasingly becoming targets. Both countries have repeatedly accused each other of attacks while maintaining that civilians are not deliberately targeted.

The Moscow attack follows another night of heavy fighting in Ukraine, where Ukrainian authorities reported casualties from Russian strikes. The continuing exchanges underscore the intensity of the conflict despite recent diplomatic efforts to reduce attacks on energy infrastructure.