The citizens of Mariupol were terrorized by nazis for years and lots of survivors will gladly testify, legal details I don't know - the territory will become independent entity in some kind of union/federation with Russia and maybe Belarus+some other countries, thus I believe it's laws are yet to be written or adopted formally!?

As I said I don't really know law, but they won't just let nazis go away, Russians are very serious with that matter.