A drone armed with a warhead hit the protective outer shell of Ukraine's Chernobyl nuclear plant early Friday, punching a hole in the structure and briefly starting a fire, in an attack Kyiv blamed on Russia.

KYIV, Ukraine (AP) — A Russian drone with a high-explosive warhead hit the protective confinement shell of the Chernobyl Nuclear Power Plant in the Kyiv region during the night, Ukrainian President Volodymyr Zelenskyy said Friday. Radiation levels have not increased, Zelenskyy and the U.N. atomic agency said.

Ukraine’s president says a Russian drone with a high-explosive warhead struck the protective shell of Chernobyl nuclear reactor. Video footage shared by the State Emergency Service of Ukraine shows the moment of the impact and the damage to the confinement.

Ukraine’s nuclear ghosts have been stirred up again after a drone armed with a warhead hit the protective outer shell of the plant at Chernobyl, the site of the world’s worst nuclear accident