Editor's note: This is a developing story and is being updated.
Russian air strikes against southern Zaporizhzhia Oblast overnight on July 29 struck a local prison, killing at least 16 people and injuring 35, Governor Ivan Fedorov reported.
Moscow's forces struck the Zaporizhzhia district eight times with FAB bombs, destroying prison buildings and damaging nearby houses, Fedorov said.
"The victims are being provided all necessary medical assistance," the governor reported. He did not specify how many inmates or prison staff members may have been among the casualties.
The full extent of damage is being determined.
Ombudsman Dmytro Lubinets denounced the attack as a "gross violation of international humanitarian law and yet another proof of Russia's war crimes."
"People held in places of detention do not lose their right to life and protection," Lubinets said on Telegram.
As of spring, Ukrainian prosecutors are investigating over 150,000 suspected war crimes committed by Russia during its all-out war.
Russia has occupied part of Zaporizhzhia Oblast since the onset of its full-scale invasion in 2022, subjecting the rest of its territories to daily aerial and artillery attacks.