At the same time, Duterte ordered PNP Director General Ronald dela Rosa to account for how state funds allocated for the anti-narcotics drive were spent.
Dela Rosa suspended the government's anti-narcotics campaign earlier this week after police were accused of kidnapping and killing a Korean businessman.
Duterte said he disagreed with Dela Rosa's proposal to retrain what he called "scalawag" policemen.
"They'll be suspended. All of them," he said in a televised press conference from his family's mausoleum in Davao City.
"Tapos, mag-report sila sa Malacanang, diyan sa opisina ko magtindig sila."
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