Campaigning for the April 24 polls ended at 5 PM today.
But the PMK cadres continued their meeting even after the restricted time. They also abused the police and other officials who asked them to stop the campaigning, police said.
Based on Tahsildar's complaint, police registered cases under violation of MCC against Anbumani and others, police said.
Police have already registered a case against Anbumani for circulating CDs containing objectionable messages.