Ukrainian drones have hit warehouses belonging to Russia’s biggest online retailer again, injuring 15 people, according to the company’s founder and regional governors.

Logistics hubs run by Wildberries in two south-west cities were impacted by overnight attacks, leading to workers evacuated, the founder said.

It is the second time Ukraine has attacked the firm’s facilities in four days, with warehouses in Tambov and Elektrostal hit on Saturday, killing eight and injuring 62.

Ukrainian President Volodymyr Zelensky said Ukraine struck logistics hubs in the Krasnodar and Stavropol regions that are “involved in providing the Russian army with drone components, navigation equipment and other gear”.

Wildberries founder Tatyana Kim said the company’s logistics centres in Krasnodar and the city of Nevinnomyssk in the Stavropol region were attacked.

“There are no words to describe all the feelings and emotions caused by the attacks on ordinary people, on our employees, on us, who are simply doing our jobs,” she wrote on Telegram. “But these situations demonstrate the most important thing: we must continue to do what we do for the benefit of people.”

Five people were hurt in a warehouse complex on the outskirts of Nevinnomyssk, Governor Vladimir Vladimirov said on Telegram. They all received outpatient treatment, he added.

Ten people were injured in the attack on a warehouse complex in Krasnodar, with three in a serious condition, the region’s governor Veniamin Kondratyev said.

The region was hit by a “massive attack last night”, with drone debris also hitting the grounds of a company in the city of Armavir and killing one employee, he added.

The city administration reported that an oil depot was struck by unmaned aerial vehicles, causing a fire.

Drone fragments also hit two apartment buildings in Krasnodar and two private homes in the village of Dinskaya, Kondratyev said. There were no injuries.

Zelensky said Ukraine had struck an oil depot, as well as a tanker and four cargo ships of the Russian shadow fleet in the waters of the Black and Azov Seas.

Russia has been operating a “shadow fleet” to evade international sanctions imposed on its oil exports.