On January 27, 2019, two bombs detonated at the Roman Catholic Cathedral of Our Lady of Mount Carmel in Jolo town which is the center of Abu Sayyaf stronghold. The bombings resulting to eighteen people were killed while 82 others were injured, mostly from Philippine Army's 35th Battalion and civilians inside the church. The Philippine military said the Abu Sayyaf under the faction of Ajang-Ajang are responsible which is also echoed by peace advocate with evidence from military intelligence operatives that they have intercepted plans of the latter to bomb the other parts of downtown Jolo months before. The bombings took place a week after a referendum for the creation of Bangsamoro Autonomous Region with the attacks is described as the opposition by the Abu Sayyaf group for their areas inclusion under the Bangsamoro authorities since the whole Sulu province itself is already known to be against the referendum with 163,526 oppose votes (54.3%).