No one was ⁠injured, according to preliminary information, the authorities said.

Ukraine ​has stepped up attacks on Russia’s energy and ​other infrastructure in recent months to undermine Moscow’s war effort.

The Ilsky refinery, with a capacity of around 138,000 ​barrels per day, has been attacked several times ​before.

The attacks on oil refineries have resulted in fuel shortages, ‌long ⁠queues at the filling stations and fuel price rises across Russia.

In Russia’s Rostov region, fires were being extinguished at two fuel depots and at ​the Taganrog ​sea port, ⁠Governor Yury Slyusar said on Telegram.

Taganrog Mayor Svetlana Kambulova said on the Max ​messaging app that the authorities evacuated ​people ⁠from their houses in the affected areas. She said a private house was damaged and the roof ⁠of ​an administrative building caught fire.

The ​Russian Defence Ministry said air defence units had downed 376 ​Ukrainian drones overnight.