The Office of the Special Prosecutor  (OSP) is an independent specialised agency responsible for performing four (4) main functions. 

• The OSP is tasked with investigating specific cases of alleged or suspected corruption or corruption-related offences involving public officers and persons who have been entrusted with prominent public functions in Ghana or a foreign country or an international organisation such as senior political party officials, government officials, judicial officials, military officials, a person who is or has been an executive in a foreign country of a state-owned company, a senior political party official in a foreign country, and an immediate family member or close associate of such a person, as well as persons in the private sector involved in the commission of such offences.

• The OSP is mandated to prosecute offenders involved in the commission of corruption and corruption-related offences on the authority of the Attorney-General. 

• The OSP is empowered to recover the proceeds of corruption and corruption-related offences. 

• The OSP is required to stake steps to prevent corruption. 

The multi-faceted mandate of the OSP set it out as a unique and specialised public institution performing –

• police functions
• investigation functions
• national security and intelligence functions
• revenue generation functions