Rafael Grossi, head of the International Atomic Energy Agency (IAEA), said the Zaporizhia nuclear power plant was “obviously” a Ukrainian facility and possible changes “will be a difficult issue” that he would have to discuss during his upcoming visit to Moscow. CNN reports, News.ro reports.

When CNN’s Fred Pleitgen asked Thursday if the IAEA would boycott the process by which Zaporizhia NPP personnel would become employees of Russia’s Rosatom, Grossi said: “I can neither boycott nor cooperate. I have to do the right thing and in this case we have to take the safety, security and well-being of staff first and foremost.”

Grossi added that “as far as the contractual changes that may come as a result of the statements are concerned, he will have to discuss them in Russia in the next few days.”

“There is not a lot of clarity about the extent of these proposed changes, so I will have to have more clarity. It is obvious to us that since this is a Ukrainian facility, it belongs to Energoatom. Any change will be a difficult issue,” he emphasized.

Russian President Vladimir Putin on Wednesday signed a decree on the transfer of the Zaporizhia NPP to state control.

At the moment when Putin was signing the decree, the Ukrainian state atom Energoatom announced that its president was taking over the duties of the NPP’s general director.