Russian shelling hit more civilian targets in Ukraine, starting a fire at a town’s hospital and damaging five apartment buildings, local officials said Tuesday, as Ukrainian authorities reported a Russian troop buildup in eastern areas before what Kyiv suspects will be a new offensive around the anniversary of Moscow’s invasion.A hospital in the northeastern town of Vovchansk caught fire late Monday as a result of the shelling, regional Ukrainian emergency services reported.The shelling caused multiple fires in the town, including at its two-story municipal hospital, the State Emergency Service in the northeastern Kharkiv region said in an online statement.Emergency crews evacuated eight civilians from the site before putting out the blaze, which caused no casualties, authorities said.Vovchansk is in the Kharkiv region, which was occupied by Russia after its full-scale invasion began Feb. 24, 2022, but was subsequently retaken by Ukraine during a counteroffensive last year.

The anticipated Russian push may seek to recapture territory Moscow lost in that counteroffensive.Ukrainian officials say they expect the new drive to come in eastern and southern Ukraine, as the Kremlin strives to secure areas it has illegally annexed and where it claims its rule is welcomed.Russian forces are “regrouping” as they attempt to break Ukrainian lines in five areas in the country’s east and northeast, the Ukrainian military reported Tuesday.

The General Staff of the Armed Forces of Ukraine said Moscow was focusing its efforts near the towns of Lyman, Bakhmut, Avdiivka and Novopavlivka in the eastern Donetsk region, as well as Kupiansk in Kharkiv province.

In the Donetsk region, Russian forces also kept up their shelling of Vuhledar, a mining town that has been one of Moscow’s key targets, the Ukrainian presidential office said. Five apartment buildings were destroyed in the town, the office said, which had a prewar population of 14,000.

Donetsk province has seen a marked influx of Russian troops in the past few days, according to regional Gov. Pavlo Kyrylenko.

“The transfer of Russian army units goes on day and night. Shelling intensifies, pressure from the Russians intensifies each day,” Kyrylenko said on Ukrainian television.

Russia is also preparing for a major offensive in the eastern Luhansk region, directly north of Donetsk, local Gov. Serhii Haidai said in televised remarks.

The number of Russian attacks in the province increased “dramatically” Monday and overnight, he said.