Ukrainian drone attacks have killed nine people and wounded over 60 more across Russia say officials in Moscow, with Kyiv's strikes targeting logistics sites and sparking a fire at an oil depot.

Kyiv has intensified its long-range drone campaign against Russian energy, military and logistics infrastructure in an effort to weaken Moscow's ability to sustain its invasion.

What we know about Ukraine's latest strikes on Russia

Seven night-shift workers were killed and 25 people were injured when drones struck a warehouse operated by Russia's largest online retailer, Wildberries, in Kotovsk in the Tambov region, Governor Yevgeny Pervyshov said on Saturday.

"Seven people working the night shift died at the scene," Pervyshov wrote on Telegram. The town is some 360 kilometers (roughly 220 miles) from the border with Ukraine.