The head of the International Atomic Energy Agency (IAEA) Rafael Grossi said Thursday during a visit to Kyiv that it was "obvious" the Russian-controlled Zaporizhzhia nuclear plant belonged to Ukraine.

"For us it is obvious that since it is a Ukrainian facility, the ownership is Energoatom," Grossi said during a press conference, referring to the Ukrainian state nuclear agency.

Russian President Vladimir Putin ordered his government this week to take over operations at Europe's largest nuclear power station in southern Ukraine.

Shelling has hit its vicinity in recent months, with Ukraine and Russia blaming each other for the attacks that have raised fears of a nuclear disaster.

Grossi, who is visiting the Ukrainian capital ahead of a visit to Russia, said that "with the safety and the security of the plant — and technical operation — we will continue to be guided by the agreements we have with Ukraine".

"We are an international organisation guided by international law and as you know very well, annexations are not accepted under international law," he said.

Early in Russia's invasion, there was fighting around Chernobyl in north Ukraine, where an explosion in 1986 left swathes of the surrounding territory contaminated.

Putin decrees Russia takeover of Zaporizhzhia nuclear plant
Moscow (AFP) Oct 5, 2022 –

Russian President Vladimir Putin on Wednesday ordered his government to take over operations at Europe's largest nuclear power station in the Russia-annexed region of Zaporizhzhia in southern Ukraine.

"The government will ensure that the nuclear facilities at the plant… are integrated as federal property," the executive order said.

The power station has been occupied by Moscow's forces since March and is close to the front line.

Putin's decree came as the head of the International Atomic Energy Agency (IAEA) Rafael Grossi said he was travelling to Ukraine for talks on the Zaporizhzhia plant.

Grossi will "continue his consultations" on setting up a nuclear safety and protection zone around the power station, the IAEA said Tuesday.

Ukrainian state nuclear agency Energoatom said earlier Wednesday, after the plant's operating company was moved to Moscow, that Russia was "creating pseudo-enterprises with the names of Ukrainian companies".

"It's just a pity that they are trying to involve Ukrainian nuclear professionals, who have been heroically working under… occupation for more than seven months" at the Zaporizhzhia plant, Energoatom said on social media.

Russian forces detained the chief of the power station, Ihor Murashov, for two days before releasing him on Monday.

But Grossi said his detention and release posed "no risk at all" to operations at the plant.

Shelling has hit in the vicinity of the power station in recent months, with Ukraine and Russia blaming each other for the attacks that have raised fears of a nuclear disaster.