Russians have also seized control of the new safe confinement over the Shelter facility, generating units No 1 and No 2, nuclear waste storage facilities No 1 and No 2.
The Energy Ministry said the seizure of the plant and any military actions in the exclusion zone risk a repetition of the Chornobyl disaster.
The State Nuclear Regulation Inspectorate of Ukraine registered an increase in the radiation level in the Chornobyl zone after the Russian invasion.