Drones launched by the Security Service of Ukraine (SBU) struck two oil depots near the town of Anapa in Russia's southern Krasnodar region causing large-scale fires, a Ukrainian intelligence source told Reuters on Thursday.

The source said the oil depots were used as transshipment points to supply fuel to Russian troops in the nearby occupied peninsula of Crimea.

"The SBU will continue to reduce Russia's economic and logistics potential for waging war," the source said. (Reporting by Tom Balmforth; Editing by Toby Chopra)