Manila, March 16 -- Three individuals linked to the Bangsamoro Islamic Freedom Fighters (BIFF) and Dawlah Islamiyah (DI) surrendered during an operation in Mamasapano, Maguindanao del Sur on March 14, the National Bureau of Investigation (NBI) said on Monday.

In a statement, the agency said the operation was carried out by NBI-Bangsamoro Autonomous Region in Muslim Mindanao (NBI-BARMM) personnel in coordination with the NBI Central Mindanao Regional Office (NBI-CEMRO), NBI-Sarangani District Office (NBI-SARDO), NBI Counter Terrorism Division (NBI-CTD), and partner security units following intelligence information indicating that certain individuals affiliated with extremist groups operating in the area had expressed their intention to di...