Completed the following sentence: Islam is practiced mainly by Maranao settlers and the "Balik Islam" (reverts). ️<unk>️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk> <unk>
Marawi siege that started on May 23, 2017.