Maguindanao del Norte and Maguindanao del Sur are two newly formed provinces in the Philippines, created by the division of the former province of Maguindanao. Datu Odin Sinsuat is the seat of government for Maguindanao del Norte, while Buluan is the seat of government for Maguindanao del Sur.

-https://elibrary.judiciary.gov.ph/thebookshelf/showdocs/2/93303