The Garda Síochána Ombudsman Commission has confirmed that it has received a complaint about the policing of the recent state visit of the Chinese Vice President Xi Jinping to Ireland.
A group of Tibetan protestors claim that they were harassed by gardaí, not allowed to protest and were then escorted out of the Phoenix Park.
A spokesperson for the Garda Ombudsman has said it received a complaint late this week.
Video footage taken at the scene will also be examined by the Commission.