The mandate of ODPP as derived from Article 157 of the Constitution is to institute and undertake prosecution of criminal matters and all other aspects incidental thereto.
- Instituting and undertaking criminal proceedings against any person before any court of law except the court martial;
- Taking over and continuing with any criminal proceedings commenced in any court by any person or authority with the permission of the person or authority and
- Discontinuing at any stage before judgment is delivered of any criminal proceedings with the permission of the court.
- Directing the Inspector General of the National Police Service to investigate any information or allegation of criminal conduct.
Other functions include:
- To ensure due regard to the public interest, the interest of the administration of justice and the prevention and avoidance of abuse of legal process;
- To undertake public prosecution of cases forwarded by all investigation agencies including the Police, Ethics and Anti-corruption Commission, Directorate of Criminal Investigations (DCI), Banking Fraud Investigations Units (BFIU), and cases taken over from private prosecutors;
- To represent the State in all criminal cases, criminal applications and appeals;
- To advice Government Ministries, Departments and State Corporations on matters pertaining to the application of criminal law;
- To expound and disseminate the National Prosecution Policy (NPP) and the Code of Conduct for Prosecutors;
- To monitor the training, appointment, and gazettement of Public Prosecutors in Statutory Corporations;
- To address parliamentary questions relating to administration of criminal justice;
- To address complaints raised by members of the public, watchdog bodies and other institutions; and
- To Undertake other administrative roles relating to efficient and effective administration of criminal law in the country