Evidence of human rights abuses in Ukraine
29 August 2014 Last updated at 10:12 BST
Human Rights Watch in Moscow has published evidence of human rights abuses in the regions controlled by pro-Russian separatists.
The group says that since April, armed fighters supporting the self-proclaimed republics of Donetsk and Luhansk arbitrarily detained hundreds of civilians, including journalists, pro-Ukrainian political activists and non-Orthodox religious leaders.
Tanya Lokshina from Human Rights Watch in Moscow spoke to BBC News.