The number of injured in a bus crash in Russia's Saratov region has risen to 10.

A fire broke out at an oil depot in the Russian city of Penza following a Ukrainian drone strike overnight on January 23, local authorities reported.

Russia was hit by a large-scale overnight drone attack on January 6, with explosions reported across multiple regions and a fire breaking out at an oil refinery in the town of Usman, according to Russian media and social media channels.

Temporary restrictions for takeoff and landing have been imposed in airports of Penza and Ulyanovsk, the Federal Air Transport Agency said, News.az reportsc iting TASS.