Ukraine's atomic energy agency accused Russia of using Europe's largest nuclear power plant to store weapons and shell the surrounding regions of Nikopol and Dnipro that were hit Saturday, according to AFP.

More than 20 weeks since Russia started its military operation, the war-ravaged nation's President Volodymyr Zelensky blamed Moscow for seeking to cause maximum damage, but pledged that Ukraine will "endure" in the conflict.

Petro Kotin, president of Ukrainian nuclear agency Energoatom, called the situation at the Zaporizhzhia nuclear plant "extremely tense" with up to 500 Russian soldiers controlling the plant.

The plant in southeast Ukraine has been under Russian control since the early weeks of Moscow's military operation, though it is still operated by Ukrainian staff.

"The occupiers bring their machinery there, including missile systems, from which they already shell the other side of the river Dnipro and the territory of Nikopol," he said in a Ukrainian television interview broadcast Friday.

Russian missiles fired Saturday struck residential buildings in the city of Nikopol, killing two people, Dnipro regional governor Valentin Reznichenko said.

In the northeast region around Ukraine's second city of Kharkiv, governor Oleg Synegubov said an overnight Russian missile attack killed three in the town of Chuguiv.

In the central Ukrainian city of Vinnytsia, officials said the death toll rose to 24 from Russian strikes after a woman died of her injuries in hospital Saturday. Ukraine said three children were among the dead.

"Sixty-eight people continue treatment, including four children. Four people are still missing," said Vinnytsia district chief Sergiy Borzov.