The head of South Africa’s Independent Directorate Against Corruption (Idac), Advocate Andrea Johnson, has resigned with immediate effect after President Cyril Ramaphosa accepted her request to step down, bringing an abrupt end to her tenure as the country’s top anti-corruption prosecutor.
Johnson’s resignation comes as she faces increasing scrutiny over her conduct at the Madlanga Commission of Inquiry, where her decisions in several high-profile investigations have been questioned. In her resignation letter, Johnson said she chose to leave office voluntarily to avoid what she described as a lengthy, expensive and potentially damaging inquiry into whether she remained fit to hold office.
“The allegations against me must still be proven but that will again require the setting up of a commission and a process which is both costly and time-consuming.”
The Independent Directorate Against Corruption (Idac) is a specialised investigative unit within the National Prosecuting Authority (NPA) responsible for investigating and prosecuting serious corruption involving public officials and organised crime. The unit plays a critical role in South Africa’s efforts to combat corruption, particularly in cases involving senior government officials, law enforcement agencies and state institutions.
Because of its role, the credibility and independence of Idac’s leadership are considered essential to maintaining public confidence in the country’s criminal justice system. Any questions surrounding the conduct of its head therefore carry significant legal and political implications.
Johnson’s resignation follows several days of testimony before the Madlanga Commission, an independent judicial inquiry established to investigate allegations of political interference, misconduct and abuse of power within law enforcement and prosecutorial institutions.
A commission of inquiry is a formal investigation led by a judge that gathers evidence, hears witness testimony and makes findings or recommendations on matters of public importance. While such commissions do not determine criminal guilt, their findings often influence future disciplinary proceedings, criminal investigations or legislative reforms.
During her appearance before the commission, Johnson was questioned extensively about decisions taken by Idac in relation to investigations involving senior members of the South African Police Service’s Crime Intelligence Division.
One of the most significant issues concerned the controversial arrest of Crime Intelligence head Lieutenant General Dumisani Khumalo and 12 other Crime Intelligence members in June 2025.
Under questioning, Johnson acknowledged that the Section 27 complaint submitted by National Coloured Congress leader Fadiel Adams did not, on its own, contain sufficient evidence to justify the arrests that followed.
A Section 27 complaint refers to a formal complaint submitted under provisions of South African criminal procedure that may trigger further investigation by prosecuting authorities. However, such complaints are expected to be supported by sufficient evidence before serious criminal action is taken.
Johnson’s concession has raised questions about whether the prosecution proceeded prematurely and whether proper evidentiary standards were followed before one of the country’s most senior police officials was arrested.
She also admitted that describing Brigadier Dineo Mokwele, recently appointed as head of Technical Support Services within Crime Intelligence, as a “token appointment” had been inappropriate.
Johnson further apologised for publicly describing Mokwele as “unsuitable” for the position despite acknowledging that she had not reviewed Mokwele’s qualifications or professional experience before making those remarks.
Another matter before the commission relates to allegations that Johnson shared a criminal case docket involving Crime Intelligence deputy head Feroz Khan, who was reportedly the suspect in an assault case. Because that matter remains before the courts, Johnson requested permission during her testimony to decline answering certain questions that could affect the ongoing legal proceedings.
Beyond her testimony, the commission has also subpoenaed Johnson to answer allegations relating to possible prosecutorial interference in investigations involving Crime Intelligence.
According to the commission, Johnson will be questioned regarding allegations that investigators targeted Lieutenant General Khumalo after receiving communication from suspended Police Minister Senzo Mchunu. She is also expected to explain evidence she previously presented alleging that Khumalo had abused the Secret Service Account, a confidential fund used by Crime Intelligence to finance covert operations and sensitive national security activities.
Although Johnson has resigned from Idac, her legal obligations before the commission remain unchanged. She continues to be under subpoena and is legally required to testify. The commission has also ordered that all case dockets relating to the Crime Intelligence investigation she authorised be produced as part of its inquiry.
In her resignation letter, Johnson stressed that her decision was motivated by a desire to protect the institutions she had served for decades.
“The country cannot afford another commission.”
She added:
“The NPA and Idac must and will always come first and I believe that this resignation in the manner proposed would serve the institutions and the country best.”
Johnson also reflected on her three decades of public service, saying she did not want the controversy surrounding her to damage the reputation of either Idac or the National Prosecuting Authority.
“I have given thirty years of service to an organisation I love dearly. I cannot be the reason that there is so much negative attention and reputational risk to Idac and the NPA.”
She requested to be released from serving the standard three-month notice period, arguing that remaining in office while simultaneously facing legal disputes over her retirement, pension and fitness to hold office could unnecessarily involve the Presidency, the Justice Ministry and the NPA in prolonged litigation.
President Ramaphosa accepted both Johnson’s resignation and her request to leave office immediately.
In a statement, the Presidency said the decision followed a recommendation by Justice and Constitutional Development Minister Mmamoloko Kubayi, supported by National Director of Public Prosecutions Advocate Andy Mothibi, that Johnson’s request be granted.
The resignation marks another significant development in ongoing efforts to rebuild public confidence in South Africa’s criminal justice institutions. Over the past decade, allegations of political interference within law enforcement, intelligence structures and prosecuting authorities have repeatedly dominated public debate, leading to numerous commissions of inquiry and institutional reforms.
For many South Africans, particularly young people concerned about corruption and accountability, the latest developments underscore the importance of independent institutions that are not only empowered to investigate wrongdoing but are themselves held to the highest standards of transparency and accountability.
While Johnson’s resignation brings her tenure as head of Idac to an end, it does not conclude the questions surrounding the investigations she authorised. Those issues will continue to be examined by the Madlanga Commission in the weeks ahead, with its findings expected to influence future reforms within South Africa’s prosecution and law enforcement systems.