The murder of two Indonesian activists, which police say was ordered by a palm oil businessman, highlights the escalating violence and threats faced by environmentalists who challenge the industry, rights groups say.
Martua Parasian Siregar, 55, and Maraden Sianipar, 42, were found dead 10 days ago with multiple stab wounds near a palm plantation in the island of North Sumatra.
Environmental campaigners and media watchdogs say the two men were former journalists who had got involved in a dispute between the palm oil company that operated the land and local residents.