Among them were seven notorious rowdies, police said.
A hunt was on to nab the others as many had gone underground after hearing of police hunting for them, they said.
Deputy Commissioner Subbulakshmi said the action against rowdies would continue and warned of severe action against those who pose threats to lives and property of the people.
She also urged the public to inform the police commissionerate if they faced any threat from rowdies.
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