Chinese officials have ordered the closure of a Jinko Solar solar panel manufacturing plant in the Zhejiang province of China, over fears of flouride pollution.

The move comes after local residents staged violent protests, accusing the plant of polluting the nearby river and killing large numbers of fish.

Haining environmental protection bureau head Chen Hongming told Xinhua that the factory’s waste disposal system has been failing pollution tests since April.

Officials have ordered the company to stop production, and overhaul the production procedures that involve emission of waste gas and wastewater.