Madurai: BJP has demanded removal of M K Alagiri as Union Minister for Chemicals and Fertilisers in the wake of cases being registered against him and some DMK workers on charges of assaulting an election official along with a videographer at a village in the district.

Talking to reporters here on Saturday evening, BJP national secretary P Muralidhar Rao said, "Democracy is facing a threat in Tamil Nadu with even election officials not being able to discharge their duties."

Son of Tamil Nadu Chief Minister M Karunanidhi, along with 52 other partymen were booked by police on Saturday in connection with alleged assault at Keelavalavu village in Melur Assembly segment.

Tehsildar M Kalimuthu, who is the Assistant Returning Officer for Melur Assembly segment, and a videographer, part of a flying squad, were assaulted allegedly by DMK activists when they videographed Alagiri's visit to a temple in Melur.

A case was registered against Alagiri and others on a complaint from the Tehsildhar for offences under the IPC including unlawful assembly, waylaying and assaulting government servant and violating prohibitory orders.