On Wednesday, Bongngat said the attackers were believed to be militants who had broken away from the Moro Islamic Liberation Front (MILF), the nation's largest Muslim rebel organisation which is in peace talks with the government.
The MILF, which has about 10,000 armed followers, has been fighting since the 1970s for independence or autonomy.
The rebellion has claimed more than 120,000 lives although the MILF has in recent years observed a ceasefire as part of the peace process.
MILF spokesman Von al-Haq insisted Thursday that none of its members was involved in the raid, adding the group was willing to coordinate with the government to allow searches in its communities.
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