Government would take further steps on the matter after getting the DGP's report, he said, replying to a submission of V Sivankutty (CPI-M) on the issue.
However, Radhakrishnan's remark, apparently justifying police action, triggered protest from LDF members, who rushed to the well of the House.
LDF members were holding today's newspapers with pictures of police beating up student activists in front of the University College campus.
Sivankutty wanted the government to suspend the police personnel responsible for beating up the students and conduct an impartial probe into the issue.
SFI activists had organised a march here yesterday for seeking an "effective" probe into the murder of SFI leader Aneesh Rajan in Idukki district three months ago. They were also protesting police action on agitating students in the city last week.