Kolkata, Sept. 21 -- Union Minister Babul Supriyo today threatened to file a defamation suit against CPI(M) leader Md Salim for the latter's "filthy" remark on him during his visit in the Jadavpur University campus on Thursday where a section of Leftist students gheraoed the minister for over five hours before the state Governor Jagdeep Dhankar rescued him in his car and got him into Raj Bhawan.

The Union Minister for Environment and Climate Change also assured the mother of a JU student that he would not file any FIR naming her son, who was shown in the TV clipping pulling Babul Supriyo's hair when the minister was assaulted.

" I will file a defamation case against this loser (Md) Salim who people threw out from the constituency. He ha...