Police Commissioner S George said even in the morning most protesters had said they were satisfied with the Jallikattu ordinance and also a bill to replace it.
Only "certain groups were resisting," he told reporters here tonight.
"There were anti-social elements and miscreants who crept into the protesting crowd and diverted the demands, which we got to know from our intelligence wing. Based on it, we decided to disperse the crowd." he added.
As many as 94 cops sustained injuries while 51 police vehicles were damaged in today's violence, he said.
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"There are sporadic incidents taking place in different parts even now. We are controlling them. We are dealing with it. We will deal with it firmly and more police personnel are coming and they will be deployed.
Wherever anti-social elements are trying to exploit the situation, the city police will not allow (it), the Tamil Nadu police will not allow (it)," he asserted.
The police have detained about 40 persons for interrogation in connection with today's violence, he said, adding, the situation was now under control.
On a video showing a police personnel purportedly setting a vehicle on fire, the city police commissioner said the matter would be probed.