Ukraine struck Russian regions with a major drone and missile attack overnight, damaging at least two factories and forcing schools to close in a major southern Russian city, according to Russian officials and media.

The barrage appeared to be one of the largest recent assaults in Ukraine’s campaign to damage Russia’s war machine on its home territory.

The Russian authorities reported Ukrainian drone attacks across several regions on Monday night, including the Saratov, Voronezh, and Oryol regions, as well as Tatarstan.