MANILA -- President Rodrigo Duterte is not yet done spilling the names of alleged "narco-politicians," Malacañang said Sunday, hours after he branded over 150 individuals as drug coddlers and traffickers.
Presidential Communications Secretary Martin Andanar said authorities are still investigating some politicians for their suspected drug ties.
"Mayroon pang ibang mga pangalan na kino-confirm pa at chine-check, nire-revalidate kung talagang itong mga politiko na ito ay sangkot sa pagbebenta ng droga," Andanar told reporters.
The Palace official, however, could not say when the President plans to drop the identities of these individuals.
He is also uncertain if Duterte's next exposé would straddle former Cabinet secretaries or other higher government officials.
"Hindi ko alam kung sino pa 'yung nasa listahan. I know that the President holds his list close to his chest," he said.
Pushing his relentless campaign against illegal drugs, Duterte bared on Sunday a long list of politicians and judges whom he accused of involvement in the narcotics trade.
(WATCH: Duterte reads list of VIP drug suspects)
Duterte’s list spanned the entire country. He read the names one by one in a nationally televised speech after midnight.
Andanar said cases will be filed against the drug-tagged individuals once the national police and the Philippine Drug Enforcement Agency complete their ongoing investigation.
"Pagdating naman doon sa pagfi-file na cases, of course, automatic naman iyan, fi-filan (file) ng case 'yan after nitong investigation at, of course, the usual din na," he said.
Duterte is urging these "persons of interest" to cooperate with the probe, according to the Palace official.
"The President is encouraging all of the persons of interest, 'yung mga alleged drug lords and drug coddlers na to come up -- to come out in the open to surrender themselves and submit themselves to thorough investigation if they want to clear their names," he said.
Last July, the President also named five police generals and several other local executives as alleged protectors of drug rings.