New Delhi, May 26 (PTI) Social activist Swami Agnivesh today termed police firing in Tamil Nadu earlier this week as "state terrorism" and demanded a CBI probe of the incident.

On Tuesday, police opened fire on the protestors agitating against the expansion of the Sterlite copper plant in Tamil Nadu's Thoothukudi, killing 13 protesters, including two women.

He alleged that the incidents of high handedness against people protesting their rights have increased under the Narendra Modi government.

"The state-sponsored terrorism unleashed on the suffering, much-harassed people of Thoothukudi in Tamil Nadu, is a black chapter in the history of the state," he said.

"Ever since Modi has come to power, we have seen an unprecedented iron-handedness in dealing with people protesting for their basic rights," Agnivesh charged.

He said that an enquiry by the CBI should be held to cover all aspects of the firing incident at Thoothukudi.

Agnivesh also appealed to the President for his intervention in the matter.

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