"In the next few weeks, I will sit with the police to put a system in place that cannot be broken. This is my promise ... I think we need a new set of laws, new set of instruments. That is what I will advise the state. But ... it will take some time."
Meanwhile, the police arrested students, former students and a member of a rock band - all Trinamool Congress supporters - for Wednesday's violence, though senior party leaders including industry minister Partha Chatterjee denied their involvement in the attack.
And, the footage of a private television channel showed on Friday that there was no provocation in the violence. It was caused when a piece of brick thrown by a person accidentally fell on the head of a person who was part of a rally before the university.