The arrested have been remanded and a charge sheet filed in the court yesterday, a police statement said.
A man from Venman Kondan village of Ariyalur district was killed in a clash between villagers of Kancheepuram district and PMK cadres, who were on their way to to a function at Mamallapuram on April 25 this year, it said.
Though a case of death due to rash and negligence act was registered initially by police, it was later altered as a murder case and the probe transferred to the CB-CID.
The April 25 incident led to large-scale violence in the northern districts of Tamil Nadu, resulting in damage to public properties.
