A bomb blast killed one person and injured 15 other in an internet café in the southern Philippines on Sunday.

The explosion occurred in Isulan, a mostly Christian city on southern Mindanao island.

No group has yet claimed responsibility for the blast, reported Reuters.

According to local authorities, however, it is most likely that the Bangsamoro Islamic Freedom Fighters (BIFF) have carried out this bomb explosion.

Earlier, the BIFF were also blamed for a blast on Tuesday, about 500 meters away, and which killed three people and wounded more than 30 others.