Representatives of the Waimiri-Atroari Indigenous people denounce that toxic waste from the Taboca mining company, controlled by China Nonferrous Mining Metal Company (CNMC), may be contaminating the Alalaú River in Presidente Figueiredo, Amazonas, near the Roraima border. Community members report foul odor, foam, dead fish, and children falling ill. Preliminary reports indicate alarming mercury levels, threatening both human health and the environment. The Waimiri-Atroari have suspended fishing, hunting, and water use. The mining company denies responsibility, attributing the changes in water quality to heavy rainfall.