This was reported by Russian ombudsman Tatyana Moskalkova. She also addressed to the Ukrainian colleagues Valeria Lutkovska with the request to help in compiling "the most complete list" of Russians who are in prisons in Ukraine.
Ukrainian Ombudsman Valeria Lutkovska visited Ukrainian citizens being held at a pretrial detention facility in Simferopol. Then Russian ombudsman Tatyana Moskalkova in Mykolaiv visited Ukrainian deserters earlier detained at the administrative border with Crimea.