A drone armed with a warhead hit the outer protective shell of Ukraine's Chernobyl nuclear plant early Friday, damaging the structure and briefly starting a fire, in an attack Kyiv blamed on Russia. The Kremlin denied it was responsible.

The Kremlin on Friday denied an accusation from Ukraine that a Russian drone had struck the Chernobyl nuclear power plant. Why it matters: Ukraine and the International Atomic Energy Agency (IAEA) said radiation levels remained stable despite the explosion at the plant.

A Russian drone struck the former nuclear power plant at Chernobyl in an attack overnight into Friday, Ukrainian President Volodymyr Zelensky has said. The strike hit the concrete shelter that covers the plant’s destroyed former fourth power unit,