A British journalist and an expert on indigenous people were killed in Brazil while researching a book on sustainable development in the Amazon rainforest, BBC reported.
Three suspects in the killings have been arrested, and eight more suspects are being interviewed.
British Journalist Dom Phillips and Bruno Pereira, who was aiding Phillips in conducting interviews, went missing June 5. Their remains were found buried in the rainforest June 17. They had been shot, according to authorities. The boat they were traveling in was also discovered sunken in the water and weighed down with bags of earth.
Javari Valley, Brazil, where Phillips and Pereira were killed, is a remote area largely known for illegal logging, fishing, mining and drug-trafficking, according to BBC.
In 2020, Brazil was ranked the fourth most dangerous country for environmental activism by Global Witness, CNN reported.