The Kremlin and Russia’s defence ministry didn’t respond to Reuters’ questions, including about alleged torture and unlawful detentions.
Ukraine’s top war crimes prosecutor, Yuriy Belousov, said authorities have identified ten sites in the Kherson region used by Russian forces for unlawful detentions.
Belousov added that hundreds of bodies of civilians had been found in other areas that Russian forces had withdrawn from.
Some of the thousands of alleged war crimes committed by Russian forces could be escalated to overseas tribunals if they are deemed sufficiently serious.
The Hague-based International Criminal Court (ICC) has opened an investigation into alleged war crimes in Ukraine.