Police fired stun grenades and rubber bullets to disperse a large crowd of protesting students at Wits university.
The university reopened for lectures but students disrupted classes saying the issue of funding for higher education has not yet been resolved.
EWN reporter Clement Manyathela says protesting students threw stones at the police and the police fired rubber bullets.
He says police have been warning these students against gathering in large groups as the university obtained a court order to prevent this.
Shamiela Fisher, EWN reporter at UCT in Cape Town, says classes have been disrupted and security has been stepped up.
Students are going around campus singing struggle songs and they are being followed by private security who are monitoring their movements.
Fisher says it is currently unclear what the plan is. They are calling for the five suspended students to be allowed to return to campus, says Fisher.