One civilian was killed in Russian shelling of Ukraine's eastern Luhansk region over the past 24 hours, Luhansk Governor Serhiy Gaidai said on Wednesday.

He said in a post on the Telegram messaging app that three trains would be offered on Wednesday to residents who wanted to leave the region, which he said was under constant shelling and may face a new large offensive by Russian forces.

Russia has denied targeting civilians since it invaded Ukraine on Feb. 24 and has said Ukrainian and Western allegations of war crimes are fabricated.

Ukraine's state railway company said in a separate statement on Wednesday that a train station in central Ukraine had been shelled overnight.

Ukraine has been warning that Russia plans intensified attacks in the country's east and south after withdrawing its troops from areas to the north of the capital, Kyiv. The United States said last week that Moscow probably planned to deploy tens of thousands of soldiers in eastern Ukraine.

(Reporting by Natalia Zinets Editing by Alexander Winning and Gareth Jones)