The assassination of Witness D, who testified at the Madlanga commission, has intensified concerns about the safety of whistleblowers.
Marius van der Merwe was gunned down on Friday, triggering renewed calls to fix the countrys failing witness protection and criminal justice systems.
The founder of Public Interest SA, who also drives the Whistleblower Awards, Tebogo Khaas, said the killings are a deeply worrying indictment of South Africas policing and justice systems.
