The Intelligence Bureau and the Tamil Nadu police are investigating a meet at Coimbatore in October 2016. It is alleged that in this meeting extremist groups plotted to create violence in Chennai and IB believes this may have been the same group that caused the violence at Marina where the Jallikattu protests took place.
Chennai police commissioner, S George at a press conference recently had said that there are vested interest groups acting through anti-social elements. These groups are causing violence, he said. Anti-social and anti-national elements had infiltrated the protests at Marina and caused the violence. The police had no choice but to use force to dispel the crowd he also added while refusing to elaborate on which group was behind the incident.(BBC,2017)