The Chennai police on Sunday registered an FIR against DMK Treasurer MK Stalin and 60 other MLAs for protesting at the Tamil Nadu Assembly complex.

The police have registered two cases under IPC Section 153 – wantonly causing provocation with intent to cause riot and under IPC section 188 – defying orders promulgated by a public servant.

DMK MLAs had staged a mock assembly on Friday protesting their suspension.

On Wednesday, TN Assembly Speaker P Dhanapal suspended 80 DMK members including Stalin for a week for unruly behaviour in the House.

On Thursday, Leader of the Opposition in the Assembly, DMK's MK Stalin, and other lawmakers of DMK held a sit-in protest at the entrance of the assembly as they were not allowed to enter their chambers.