Moscow and Kiev accused each other, for the second time in a few days, of bombing the Zaporozhye nuclear power plant in southern Ukraine.
On Sunday, Ukraine accused Russia of bombing the station again, and called for new international sanctions to be imposed on Moscow for causing "nuclear terrorism".
"Russian nuclear terrorism requires a stronger response from the international community, sanctions against the Russian nuclear sector and fuel," Ukrainian President Volodymyr Zelensky wrote on Twitter.
The station, located in Russian-controlled territory, was bombed last Friday.
The Ukrainian state nuclear energy company, Energoatum, said that the Russian forces damaged three radioactive sensors when they bombed the facility again on Saturday evening, wounding one of the workers with shrapnel.
For its part, the Interfax agency quoted a statement from the administration of the Russian-controlled city of Enerhodar, where the nuclear plant is located, saying, "Ukraine bombed the station using the Uragan multi-launch system of 220 mm caliber."
The statement said that "administrative buildings and areas adjacent to the storage facility were damaged."
On Friday, the Director-General of the International Atomic Energy Agency, Rafael Grossi, warned of the danger of a nuclear catastrophe.
The missiles hit a high-voltage power line at the nuclear facility, prompting the operators to disconnect one of the reactors, although no radiation leak was detected.
On Friday, Moscow and Kiev accused each other of bombing Europe's largest nuclear power plant.
Zaporozhye is the largest nuclear power plant in Europe, and one of the 10 largest nuclear power plants in the world, containing 6 nuclear reactors.
Russian forces captured the nuclear plant in the first phase of the war in early March, but it is still operated by Ukrainian technicians.