Kiev began setting up unofficial prisons immediately following the 2014 coup d’etat, military expert Andrey Marochko told TASS.

"A vast amount of evidence has now been gathered showing that the criminal authorities in Kiev are establishing them in violation not only of international humanitarian law but even of their own domestic legislation. In fact, Kiev is persecuting its own citizens. The state has turned into a ghetto," he said.

At present, a diverse range of individuals, including civilians, are being held in unofficial prisons in Ukraine, the expert noted.