Metro Manila (CNN Philippines, October 29) — For President Rodrigo Duterte, dead drug suspects are nothing but worthless pieces of dead animals.

"Drugs, it's not just because of a dead body there. For me if you ask me on national television that idiot there who's dead, who's a drug pusher, he's just a piece of carcass. Carcass lang 'yan sa akin," he said during a speech in Davao City on Sunday night.

Duterte's campaign against illegal drugs has left more than 4,000 killed in various police operations, while human rights groups peg the number beyond 12,000.

The President is hell-bent on eradicating illegal drugs in the country, but he said he will not resort to declaring martial law nationwide. He also issued another warning against drug lords.

"I will not declare martial law but just like what I'm doing, I will go for the strongest tools — political tools in my hand. Drug problem, it will remain the same especially if you are a drug lord, I would be happy to kill you. My God, I will be happy to kill you. Just don't f*** with my country," he said.

At least five communications about President Rodrigo Duterte's war on drugs have been filed at the International Criminal Court (ICC).

The President in September admitted his "only sin against the country is the extrajudicial killings," which his critics take as an admission of his involvement in summary executions. But Duterte's spokesperson was quick to say Duterte was not serious.