The academic programme at the University of the Witwatersrand (Wits) has been indefinitely suspended.
On Friday students rallied support on campus ahead of a march to the Congress of South African Trade Unions (Cosatu) offices.
Former SRC president Mcebo Dlamini told News24 reporter Tshidi Madia Cosatu could not continue to sit on the line when it came to the question of university fee increases.