According to the police, the case was registered against L. Murugan based on a complaint filed by the assistant returning officer of the Bhavanisagar Assembly constituency, R. Uma Shankar.
The poll official alleged that Murugan held a meeting inside a private school on March 26 along with his party cadres. A case has also been registered against the management of the school located on the Sathyamangalam-Bannari road under the Bhavanisagar Assembly constituency.
The police said that an inquiry was conducted following which a case was registered against L. Murugan and 100 party cadres for violation of the Model Code of Conduct.
L. Murugan is involved in a three-cornered battle in the Nilgiris (SC seat) against former Union Minister and sitting MP A. Raja of the DMK, and D. Lokesh Tamil Selvan of the AIADMK.