Maj-Gen Feroz Khan, who was shot and wounded in an apparent assassination attempt in Houghton on Sunday night, was due to testify before the Madlanga commission on Wednesday.
The suspended crime intelligence boss has been linked to allegations ranging from interference in high-profile police operations and political connections to criminal charges and procurement controversies.
Among the people he has been linked to is Julius Malema, and it was revealed at the commission that the EFF leader protected Khan from dismissal for misconduct.
