Karunanidhi's son and Dravida Munnetra Kazhagam working president M K Stalin appealed to party cadre to maintain discipline.

'Do not give room for untoward incidents. Maintain peace,' said Stalin in a statement, adding, 'Hand over anti socials to police , they may attempt to tarnish DMK.'

He also urged DMK workers to 'cooperate with the police and prove that DMK follows military discipline'.  -- Agencies