The death toll of fish is estimated to be in crores.

“For a long time we have been demanding action from the Pollution Control Board to stop the discharge of effluents by factories located in the area. All your pleas were ignored and people engaged in fish farming have suffered losses worth lakhs. We demand that our losses be compensated,” the protesters said.

The protest turned violent and the protesters assaulted the police guarding the board office.

To vent their anger, the protesters brought a large quantity of dead fish and threw them in the premises of the Pollution Board office.

In this region, fish farmers engaged in cage farming have suffered huge losses after toxins entered the cages, resulting in the death of fish, including pearl spot, tilapia and Asian sea bass.

Industries Minister P. Rajiv said on Wednesday that the state government has sought a detailed report from the officials.

Meanwhile, the blame game has started between various departments of the state government.