Manila, March 20 -- The Philippine Drug Enforcement Agency (PDEA) destroyed PHP2.1 million worth of marijuana plants this week in the highlands of Sugpon, Ilocos Sur province.

In a statement on Friday, PDEA said 11,600 pieces of fully grown marijuana plants were seized in a 1,700-square-meter land area in Barangay Licungan in Sugpon, Ilocos Sur, on March 19.

Authorities said no cultivator was arrested, and the landowner remains unidentified.

"We are hitting the source to starve the drug supply chain," PDEA Regional Director Julius Paredes said in a statement.

This is now the agency's third successful operation this month in Sugpon town, where around PHP5.3 million worth of marijuana plants were destroyed by authorities during their se...