Russia-Ukraine updates: Putin suspends key US-Russia nuclear treaty

There are mines along the perimeter of Zaporizhzhia, Europe's largest nuclear power plant, the head of the International Atomic Energy Agency, Rafael Grossi, said at a press conference in Kyiv Thursday after holding talks with Ukrainian President Volodymyr Zelenskyy. The facility is currently under the control of Russian forces.

"There have been indications that in the perimeter of the plant there are some mines, yes," Grossi said, before denying that there are any mines inside the plant itself.

Grossi is headed to Russia next to push for a security zone to be set up around the Zaporizhzhia plant.

Grossi told reporters that the IAEA considers Zaporizhzhia a Ukrainian facility.

"I think the IAEA, as an international organization, has a mission, has a legal parameter to do it. And what I will be is very consistent as I have been from the very beginning. We are not changing our line. We are continuing saying what needs to be done, which is basically avoid a nuclear accident. At the plant, which is still a very, very clear possibility. Yes," Grossi said.

-ABC News' Brittyn Clennett

The village of Hrekivka in Ukraine's Luhansk region has been liberated, its governor, Serhiy Haidai, said Friday, adding that fierce fighting continues for other settlements.

"I’ve seen some soldiers already posted a photo of them standing on the background of the sign 'Hrekivka,' so its not a secret anymore — it is already liberated. And we keep moving in that direction," Haidai said.

"After liberating Lyman [in Donetsk at the end of last month], as expected, the main battles are on the direction of Kreminna. The occupiers are pulling their main forces there. This is where the beginning of de-occupation of Luhansk oblast lies," Haidai said.

He added, "Luhansk region liberation will be tougher than Kharkiv region. All those Russian military who ran from Kharkiv region and Lyman ran to our direction, so the occupation forces increased in number."

-ABC News' Will Gretsky

Russian forces struck a residential neighborhood in the southeastern city of Zaporizhzhia early on Thursday, officials said.

Ukrainian officials released images they claim show evidence of tortures and killings in eastern Kharkiv, in areas recently reclaimed from Russia.

Authorities are investigating an alleged Russian torture chamber in the village of Pisky-Radkivski, according to Serhiy Bolvinov, the head of the investigative department of the national police in the region.

Bolvinov posted an image of a box of what appeared to be precious metal teeth and dentures presumably extracted from those held at the site.

Andriy Kostin, Ukraine's prosecutor general, also spoke of new evidence of torture and killings found Wednesday in the Kharkiv region.

Kostin told The Associated Press on the sidelines of a security conference in Warsaw that he had just been notified of four bodies found with signs of possible torture. He said they were believed to be civilians but an investigation was still needed.

Two bodies were found in a factory in Kupiansk with their hands bound behind their backs, while two others were found in Novoplatonivka, their hands linked by handcuffs.

During his public speech, Kostin said officials found the bodies of 24 civilians, including 13 children and one pregnant woman, who had been killed in six cars near Kupiansk. It is not clear when the discovery was made.

-ABC News' Jason Volack