Adv Andrea Johnson, head of the Investigating Directorate Against Corruption (Idac), failed to appear before the Madlanga commission due to medical reasons, prompting criticism from commission chair Justice Mbuyiseli Madlanga.

The medical certificate provided by Johnson's doctor lacked detailed information about her health condition, leading Madlanga to label it as 'useless'.This incident is part of a broader pattern where multiple witnesses have delayed their testimonies citing health issues.The commission is considering verifying the authenticity of such medical certificates through independent assessments.

Witnesses like Maj-Gen Feroz Khan, Suliman Carrim, and others have also faced similar issues, with some testimonies postponed or conducted in absentia.

Legal experts suggest that while patient-doctor confidentiality must be respected, the commission's right to scrutinise medical certificates is valid.The case highlights ongoing challenges in ensuring transparency and accountability in high-profile corruption inquiries.