Cordillera police joined national police units, the armed forces, the Air Force, the Coast Guard, intelligence officers and PDEA agents in a nine-day eradication operation dubbed Oplan Highlander, from 29 April to 7 May 2024.[1][2] Regional director Brig. Gen. David Peredo Jr. and other Cordillera officers took part in person in uprooting and burning the plants.[1]

The teams found 3,349,500 fully grown marijuana plants and 1,575,000 grams of dried stalks with fruiting tops across 27 plantation sites on Mt Chumancil, spanning the Tinglayan barangays of Buscalan and Loccong.[1][2] The PRO-Cordillera press release valued the haul at P858,800,900.[1]

Officers were still working to identify the cultivators and had asked barangay communities for information when the release was issued.[1] Five officers later received the PNP Heroism Medal for the operation.[2]