A Russian drone attack has hit the radiation shelter protecting Chernobyl's damaged nuclear reactor, Ukrainian President Volodymyr Zelensky has said. The overnight strike at the nuclear plant, which is the site of the world's worst nuclear accident, caused a fire that has since been extinguished, he added.

Ukraine blamed Russia for the harrowing attack, while Moscow claims Kyiv staged the drone strike to secure more funding and to implicate Russia.