They also organised a 'road roko' agitation in front of the hotel where she was staying but police pacified and asked them to disperse.
Later, Premalatha told reporters she had only highlighted the government's failure to implement its poll promises during her election meetings and never made any personal attacks.
Condemning the protest by AIADMK, CPI(M) which is People's Welfare Front (PWF) constituent, said the AIADMK had protested against Premalatha as it was "unable to tolerate" her critical remarks against the AIADMK government made at a meeting in Salem on Saturday.
He urged the state police and Election Commission to take action on this matter.
PWF, whose other constituents are MDMK, CPI and VCK, has inked a poll pact with Vijayakant's DMDK, alloting it 124 of the 234 Assembly seats in Tamil Nadu for the May 16 polls.
Meanwhile, police said a case has been registered against DMDK MLA Mohanraj and 40 other activists for conducting a meeting here beyond the specified time of 9 PM yesterday.