A large fire broke out at the Saratov oil refinery in Russia after it was attacked by loitering munitions on the night of 30-31 May.

A fire broke out at the Lukoil-Volgogradneftepererabotka refinery in the Russian city of Volgograd following a drone attack. — Ukrinform.

Drones targeted the port area in Rostov Oblast, setting a tanker and fuel storage tank on fire, whilst an oil depot in Krasnodar Krai was also struck.