Correctional Services spokesman Manelisi Wolela has denied allegations that student leader Mcebo Dla.
The case involving alleged hitman, Nkosinathi Langa, has again been postponed in the Protea magistrate's court.
Langa, 24, of Dube Hostel, Soweto, is facing two counts of murder and being in possession of an unlicensed firearm and ammunition.
On Friday magistrate Solomon Makamu postponed the case to July 11 while waiting for an indictment from the Johannesburg high court which will be served on Langa.
"The charges are very serious. It is best for the case to be heard in the high court," said prosecutor Clement Harrington. - Penwell Dlamini