On June 16, Mr. Bui Van Chuong - Chairman of Cam Long Commune People's Committee - said that on the same morning, many people were still gathered at the pig farm area to protest the problem of environmental pollution.

According to Mr. Chuong, on June 15, a working group of the Department of Environmental Crime Prevention and Control (C05 - Ministry of Public Security) inspected the scene and coordinated with the authorities of Thanh Hoa province to take water samples to clarify the people's reflections.
Also on June 15, the authorities checked information from people about an underground pipeline that discharged water into Tra Boi dam. Through on-site inspection, the authorities discovered a discharge pipe flowing into this dam area.
As reported by Lao Dong Newspaper, since the beginning of June 2025, dozens of households in Long Tien village have continuously protested the prolonged discharge of waste from the farm, affecting the health, daily life and the cemetery area of the village.
After receiving the feedback, Cam Thuy District People's Committee, Cam Long Commune People's Committee and relevant agencies inspected the scene. At the pond containing water adjacent to Tra Boi dam, near the pig farm, black water was recorded, giving off a foul smell. The ditch near the dam is about 5m wide, 70m long, 350m2 wide, and also has black water and a strong stench.

In the area where people reported, the authorities discovered a wastewater pipeline from the pig farm discharged into Tra Boi dam. The wastewater is black and has a distinct odor. In previous days, there were dead fish in this dam, although the number was not large.
Working with the authorities, Mr. Nguyen Quoc Chinh - the farm owner - admitted the violation, apologized to the people of Long Tien village and pledged to fix the problem, lining the tank, collecting and treating all generated wastewater.
It is known that Mr. Chinh's farm has a scale of 2,400 sows and nearly 5,000 sows/catch, divided into 2 farms, operating since 2018.