Teresita Navacilla was a member of Save Pantukan Movement, a network of indigenous peoples from the Pantukan region in the Compostela Valley province fighting for the right to their ancestral lands, advocating for more stringent environmental protection in the country and opposing large-scale open pit mining by foreign corporations in Southern Mindanao. On 30 January 2016, three days after after being shot, Ms Teresita Navacilla died in a hospital. The attack was reportedly perpetrated by soldiers from the 46th Infantry Battalion, which has allegedly been assigned to secure the King-king mining project. Inhabitants of the Compostela Valley report that the soldiers have arrested and assaulted members of indigenous people Mansaka and other civilians from the region that have opposed the mining project.