GENEVA (Reuters) - Some 530 people considered by rights groups to be political prisoners in Belarus should be immediately released, including three opposition candidates, the U.N. Special Rapporteur said on Monday.

       Presenting her annual report to the Human Rights Council in Geneva, Ana？s Marin described a "deteriorating" situation since a disputed election that President Alexander Lukashenko says he won last year.

       (Reporting by Emma Farge; Editing by Michael Shields)