In a spate of attacks, Russia targeted infrastructure far from the front line, according to Ukrainian and Russian reports.
Five train stations were hit by Russian strikes in central and western Ukraine within the same hour, the head of the state-run Ukrainian Railways said. An unspecified number of casualties were reported.
A station in Krasne, near Lviv, was among those targeted, the region’s governor said.
One person was killed and seven were wounded when Russian missile strikes hit an oil refinery and power plant in Kremenchuk in central Ukraine, the governor of the Poltava region said. Moscow confirmed it had destroyed an oil refinery, adding that fuel depots were impacted.
Russian rockets targeted two towns in the central Vinnytsia region, causing an unspecified number of deaths and injuries, regional Governor Serhiy Borzov said.
Hundreds of civilians remain trapped in the besieged Azovstal steelworks, the last Ukrainian stronghold in Mariupol, according to Ukrainian officials.
Moscow said it was opening a humanitarian corridor to let civilians out of the plant but Kyiv said no agreement had been reached and appealed to the United Nations for help in reaching one as “initiator and guarantor”.
In the Russian region of Bryansk, just north of Ukraine, a fire erupted at an oil depot, but no immediate cause was given for the blaze.
It comes as Antony Blinken, the US Secretary of State, said the US had approved a $165m (£130m) sale of ammunition to Ukraine, along with $322m (£251m) in foreign military financing.