The ambush of Bangsamoro Interim Chief Minister Abdulraof Macacua’s convoy on 15 August in Brgy. Bitu, Datu Odin Sinsuat exposes the deepening polarisation within the Moro Islamic Liberation Front (MILF). It comes at a particularly critical period of the Bangsamoro political settlement and raises serious questions about the stability of the region, just a few weeks before the first Parliamentary election will be held.