32 Its principal role is to deal with complaints about the conduct of members of the Garda Síochána. Its vision is to be a driver of ever-improving police accountability. Complaints should be made within 12 months of the incident in question but the Ombudsman may extend this time limit if it considers that there are good reasons for doing so Direct witnesses to such behaviour may can also make a complaint to the GSOC. Third party complaints made on behalf of others are accepted providing these are done with permission of the aggrieved party. In disciplinary investigations GSOC’s responsibility is to investigate and send an investigation file with a recommendation to the Garda Commissioner; the Garda Commissioner takes a decision regarding any breach of discipline and the application of any sanctions. GSOC does not have the power that the Garda Síochána has to bring cases to court on behalf of the Director of Public Prosecutions (DPP). However, after a criminal investigation, a file may be sent to the DPP with a recommendation; the DPP takes a decision based on the investigation file whether to prosecute or not. In criminal investigations, GSOC officers have all the powers, immunities and privileges conferred on, and all the duties imposed on, any member of the Garda Síochána.