Maguindanao del Sur, March 6 -- Police authorities here will file additional charges on Wednesday against a sub-leader of the extremist Bangsamoro Islamic Freedom Fighters (BIFF) following his arrest during a joint law enforcement operation in Maguindanao del Sur recently.

Capt. Joel Lebrilla, town police chief, identified the suspect as Lakmodin Manontok Nanding alias "Marrox," 45, now detained at the police provincial detention facility.

"Marrox, a sub-leader of the BIFF-Karialan faction, was arrested in the village of Pidsandawan, Rajah Buayan, Maguindanao del Sur on Sunday night following a brief firefight," Lebrilla said in an interview on Wednesday.

The firefight broke out during clearing operations at the border of Rajah Buayan ...