Former National Security Advisor MK Narayanan was attacked in Chennai yesterday. A miscreant attacked him with footwear as he made a speech on the future of Sri Lankan Tamil refugees in India organized by a newspaper. <br/><br/>When he returned from the dais, a youth suddenly assaulted him, though he seemingly did not suffer any injuries. <br/><br/>The police immediately arrested the attacker. It is learnt that the attacker is from Pudukottai district and owes allegiance to a fringe linguistic outfit called "May 17 Movement," which was formed after the final war in Sri Lanka in 2009. <br/><br/>The city police sources told AIR that about 75 people belonging to the same outfit were arrested while trying to stage demonstrations against the event before its commencement.