Images of a Krusik 81mm M72 HE Mortar were shared by BBC Indonesia in November 2021. The images were taken by members of the West Papuan National Liberation Army (TPNPB) militia group in Kiwirok, and a commander of the Indonesian Cenderawasih Military Command, Major General Ignatius Yogo Triyono, confirmed that his troops had fired mortar rounds at Kiwirok. Investigations conducted by Conflict Arms Research into 4 bombing incidents using Krusik Mortars revealed that the declared end user of the munitions was the Indonesian State Intelligence Agency.
The Krusik 81mm M72 HE has a range of 4.9km and a "killing range" radius of 14m. The BBC report indicates that this high explosive weapon is used during combat in forest areas where it is difficult to know exactly where the target is.