Forest and land fires in Indonesia in 2019 reached 1.65 million hectares. Some of the burned areas are included in the concession areas of large corporations. The development of digital forensic studies makes investigations possible. One such method is Open Source Intelligence, which is defined as an intelligence gathering discipline that consists of gathering information from public or open sources and analyzing that information to produce valuable intelligence. The purpose of this research is to determine the use of Open Source Intelligence as an investigative approach used by journalists to uncover the facts of a crime. This research uses a descriptive qualitative method with analysis of Digital Forensics theory, Newsmaking Criminology, and Journalism theories to see how Open Source Intelligence opportunities in revealing the facts of the 2019 forest and land fires committed by companies in South Sumatra, West Kalimantan and Central Kalimantan.