Serhii Haidai, the head of the Luhansk regional military administration, said Thursday Russian forces struck a railway overpass near Barvinkove, blocking an evacuation route for civilians from eastern Ukraine.
"The enemy hit an overpass near Barvinkove station, Donetsk railway, with an air strike," Haidai said on Telegram. "Almost 500 evacuees from Luhansk region are stuck at a train station.
Haidai called the rail line the "only Ukrainian-controlled railway exit from Sloviansk, Kramatorsk and Lyman. The road of life for tens of thousands of our citizens now."
Three evacuation trains were temporarily blocked in Sloviansk and Kramatorsk, both in Donetsk region, Haidai said.
Ukraine authorities have reported heavy shelling throughout the eastern Donbas region, ahead of what they are warning may be a major Russian offensive.
"We are waiting for the shelling to end," Haidai said. "People are placed at the station until the situation is clarified. The local authorities of Donetsk region cities have declared their readiness to accommodate non-locals for the night."