The head of the International Atomic Energy Agency raised grave concern about shelling at a nuclear power plant in Ukraine, as its military said Russian forces had attacked dozens of front-line towns. Since Russia invaded Ukraine on Feb. 24 in what President Vladimir Putin termed a “special military operation”, the conflict has settled into a war of attrition fought largely in Ukraine’s east and south. But the fighting over the Zaporizhzhia nuclear plant in the south, captured by Russian forces in the opening stage of the war but still run by Ukrainian technicians, has raised the prospect of a wider disaster.

Ukraine’s state nuclear power company Energoatom said on Sunday that a worker was wounded when Russian forces again shelled the Zaporizhzhia nuclear power plant on Saturday evening.