Updated: SBU behind attacks on Russian oil refineries, military airfield, source says

Editor's note: The story was updated with a comment from the Kyiv Independent's source in security and defense forces.

A fire broke out at the Ilskyi oil refinery in Russia's Krasnodar Krai after a drone attack on the facility on the morning of June 21, the Russian Telegram news channel Mash reported.

Russian sources also reported that drones targeted a military airfield in Yeysk during the attack on Krasnodar Krai.

A source in security and defense forces confirmed for the Kyiv Independent that a joint attack by the Security Service of Ukraine (SBU) and the Navy's missile forces targeted the 167th training center at the Yeysk military airfield, where Shahed drones were stored.

Several blasts and secondary explosions were recorded at the base, the source said. SBU drones also targeted the Afipskyi, Ilskyi, and Krasnodarskyi oil refineries, according to the source.

Earlier in the night, the Krasnodar Krai Operations Center reported that several districts in the region had come under a massive drone attack.

The strike on the Ilskyi refinery reportedly caused a 50-square-meter fire at the attack site. Two people were injured, according to preliminary reports from local police.

Authorities claimed the fire had already been extinguished.

In recent months, Ukrainian forces have launched a series of drone strikes aimed at damaging Russia's oil industry, which is crucial to sustaining Moscow's war efforts, as well as its military hardware.

Attacks on oil depots in Krasnodar Krai in May reportedly disrupted operations at two facilities, the Slavyansk-on-Kuban and Tuapse refineries.