Cape Town – UCT student activist Masixole Mlandu is expected to appear in the Wynberg Magistrate's Court again on Friday.
The charges were not immediately known, but on Thursday night students were mobilising a support group to attend the hearing.
Mlandu's arrest at the university on Wednesday was his second in two weeks.
Last week, he appeared in the same court for allegedly violating a University of Cape Town interdict against him.
UCT said earlier it had laid criminal charges after students allegedly broke into the campus protection services' office and intimidated and forced guards out on Wednesday.
Spokesperson Elijah Moholola said on Thursday that about 70 protesters were involved.
"One member of the group, who could be identified and appeared to be the leader and was making demands on their behalf, was arrested by SAPS," he said.
"UCT is attempting to identify other individuals that were part of this group, who may have committed unlawful actions, so that action can also be taken against them."
Their actions contravened an agreement between protesting students and the university's executive that security be allowed to continue operating.