The Special Investigating Unit says the former Health minister, Zweli Mkhize could still be criminally charged for his role in the awarding of a Digital Vibes communications contract.

Under Mkhize, the health department awarded the R150-million contract to Digital Vibes for a National Health Insurance (NHI) communications campaign.

Mkhize, who has close links with Digital Vibes owners, reportedly pressured officials to appoint the company.

The SIU says Mkhize may have committed acts of criminality and caused irregular and wasteful expenditure by approving budgets for the contract.