The Special Investigative Unit (SIU) is demanding to know why the National Prosecuting Authority (NPA) failed to prosecute in hundreds of cases of alleged bribery presented to it in a report in 2009.
It comes as ANC MP Vincent Smith asks to be removed as chairperson of Parliament's Constitutional Review Committee until a probe into allegations that he received bribes from a private company is concluded.
Smith admitted that he received a personal loan from Bosasa to pay his daughter's tuition fees but denies that it was a bribe.
This has raised questions about the facilities management group and how they conduct business.
The company has got a reported R10 million worth of contracts with various government departments.
The 2009 report found Bosasa had bribed former prison boss Linda Mdi and CFO Patrick Gillingham to get the tenders worth more than R1.5 billion by the department of correctional services.
The NPA never took action, now the SIU want to know why they didn't take action on that case and others.
Speaking to Bongani Bingwa, Advocate Mahlodi Muofhe says they haven't received any explanation from the NPA.
The fact of the matter is, as the SIU, we have embarked on a new strategy which we are implementing where we are saying we have to follow up on all the matters which we have worked on and nothing has been done about them.— Advocate Mahlodi Muofhe, Chief Governance Officer at SIU
Listen below to the full interview: