A recent surge in aerial attacks has strained fuel deliveries to parts of southern Russia, the country’s Ministry of Energy said on Monday.

Enterprises in the fuel and energy sector have faced “a growing number of aerial attacks,” resulting in “temporary difficulties with fuel supplies” in a number of southern regions, the ministry said in a statement.

The ministry said it has established a permanent industry coordination headquarters comprising all major companies in Russia’s fuel and energy sector to ensure the entire industry’s stable and efficient operation.