China’s Fujian province is set to take legal action against government officials and Zijin Mining executives over a copper mine waste leak that contaminated the Ting River on 3 July.

The Fujian county chief and a top environment official have been ordered to resign along with two other officials while police have detained three managing personnel from Zijin Mining, according to Xinhua.

Fujian province said it will pursue company executives and relevant government officials in accordance with the law.

Wastewater containing acidic copper leaked from the mine on 3 July, contaminating the Ting River and poisoning 1,890t of fish.

The company is being investigated by the China Securities Regulatory Commission concerning the nine-day delay in disclosing the leak to its investors and the public.

Mining operations remain suspended until the mine meets safety and waste management standards.