There have been allegations that police (Royal Ulster Constabulary) double agents or informers in the UVF were linked to the massacre and that police protected those informers by destroying evidence and failing to carry out a proper investigation. At the request of the victims' families, the Police Ombudsman investigated the police. In 2011 the Ombudsman concluded that there were major failings in the police investigation, but no evidence that police colluded with the UVF. The Ombudsman did not investigate the role of informers and the report was branded a whitewash. The Ombudsman's own investigators demanded to be disassociated from it. The report was quashed, the Ombudsman replaced and a new inquiry ordered.