http://www.serap-nigeria.org
The Socio-Economic Rights and Accountability Project (SERAP) is a Nigerian non governmental, non-profit organization. SERAP aims to promote transparency and accountability in the public and private sectors through human rights and has adopted an activist approach in these matters, including commencing action against the Federal Government of Nigeria and other governmental bodies before Nigerian and regional courts. SERAP has also SERAP petitioned the Prosecutor of the International Criminal Court (ICC) “to use your position and powers to examine and investigate whether the systemic/grand corruption in Nigeria amounts to a crime against humanity within the jurisdiction of the International Criminal Court, and to prevail on the Nigerian government to fulfil its obligations to effectively and fairly investigate and prosecute all allegations of grand corruption since 1985”, based upon Nigeria being a state party to the Rome Statute and having deposited its instrument of ratification on 27 September 2001.

http://www.icpc.gov.ng
The Independent Corrupt Practices Commission (ICPC) is the agency established by the Federal Government of Nigeria to, amongst other things, investigate allegations of public corruption and prosecute offenders.

http://www.efccnigeria.org
The Economic and Financial Crimes Commission (EFCC) is the agency established by the Federal Government of Nigeria to investigate economic and financial crime and to prosecute offenders.