Philippine president Rodrigo Duterte will name government officials involved in illegal drug trade, issuing a stern warning against those in the business.

He identified the main drug lords in the country as Wu Tuan, Peter Lim, and Herbert Colangco, the Philippines Inquirer reports.

Colangco is the son-in-law of Ozamiz City Mayor Aldong Parajinog, Duterte said.

Some of the mayors involved in the drug trade are from Mindanao, he added – the southern island where his hometown Davao is located.

Retired Deputy Director General of the police taskforce, Marcelo Garbo “is the protector” of drug lords, he said.

He was advised by intelligence officials not to disclose the names of the government officers yet.

Image from Philippine president Rodrigo Duterte’s Facebook page