At least five people were killed and 11 injured in the Moscow and Leningrad regions overnight after a large-scale Ukrainian attack targeting 18 Russian regions, plus occupied Crimea, with hundreds of drones. File photo by Stringer/EPA

Aug. 4 (UPI) -- At least five people were killed and 11 injured in the Moscow and Leningrad regions overnight after a large-scale Ukrainian attack targeting 18 Russian regions, plus occupied Crimea, with hundreds of drones.

Moscow region Gov. Andrey Vorobyov said Chekhov and Novoselki, both about 45 miles south of Moscow, were worst affected with several fires ignited by the drones, including a blaze at a warehouse, and damage to a power substation and an administrative building.

One person was injured in an attack on a warehouse in Krasny Bor, southeast of St. Petersburg in the Leningrad region, according to regional Gov. Aleksander Drozdenko.

Drozdenko did not share further details of the facility targeted but Wildberries, Russia's largest online retailer, said one of its logistics hubs in Krasny Bor was set ablaze in a drone attack.