The protestors claimed that that the plant would pollute groundwater in their area, and causing serious environmental hazards.
Three more people were shot on Wednesday - one of them fatally - as protests against a copper smelting plant continued to roil the southern Tamil Nadu town of Tuticorin. Nine people died nearly instantly in police firing. Earlier in the day, the Madras High Court stayed further production of copper smelter in the Sterlite unit in view of the protests.
Palaniswami, Deputy chief minister O Panneerselvam and senior ministers of the AIADMK government reviewed the situation with senior police and civil officials, including police chief TK Rajendran at the state secretariat.
According to the Tuticorin police, eight men and two women were killed in the violence. A plea for a CBI probe into the matter was also dismissed by the bench.
The death toll in anti-Sterlite protests went up to 12 after a youth was killed and two others injured in fresh incidents of police firing on Wednesday.
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After being chased away from the GH, the mob pelted stones on the police and their vehicles.
Shops and commercial establishments remained shut, educational institutions were also closed.
The inquiry will cover the "law and order incidents following the siege of the District Collectorate by thousands of persons violating prohibitory orders", a state government release said.
Public transport has been suspended from Thoothukudi to other parts of Tamil Nadu.
The new spell of violence began this morning, when police used mild force to chase away a large number of anti-Sterlite Movement members and relatives of firing victims from the Government Hospital (GH).