A massive oil depot fire raging near Russia's Black Sea resort of Sochi has been blamed by Russian authorities on a Ukrainian drone attack. Sochi's nearby airport has suspended flights. Krasnodar Region Governor Veniamin Kondratyev said on Telegram that drone debris hit a fuel tank and 127 firefighters were tackling the blaze.

Ukraine's military said on Saturday that it had struck oil facilities inside Russia, including a major refinery as well as a military airfield for drones and an electronics factory.

Ukraine’s anti-corruption bodies said on Saturday they had uncovered a major graft scheme that procured military drones and signal jamming systems at inflated prices, two days after the agencies’ independence was restored following major protests.

The arrests came days after President Volodymyr Zelensky’s U-turn on an effort to neuter anticorruption agencies.