Authorities discovered a tunnel believed to have been used by communist rebels as a base, as well as some explosives, during an operation in Tadian, Mountain Province, police reported.
Members of the Regional Mobile Force Battalion, along with other police units, found the tunnel in Barangay Balaoa around 4:00 p.m. Thursday, according to a report from the Cordillera regional police.
The man-made tunnel, believed to have been left about three months ago, was about 20 feet long, 3 feet wide, and had a vertical clearance of 4 feet.
Police recovered two improvised anti-personnel or anti-tank landmines, another IED in a plastic bag, and two improvised “blasting machines” at the hole.
Operatives immediately disrupted one of the explosives which, according to another police report, was placed near the water source of some residents of Balaoa and could have had a blast radius of 300 meters.