"Do not worry about me. I can face the ICC. If they want to indict me and convict me, fine. I will gladly do it for my country," Xinhua quoted Duterte as saying at the Malacanang presidential palace.
Duterte's statement came in the wake of the ICC's action to launch a preliminary examination his anti-drug campaign amid allegations that police resorted to extrajudicial means to kill drug suspects.
However, Duterte said he would only be loyal to the people and the flag where he swore allegiance to after getting elected as the president in 2016.
Duterte said on Monday that the ICC move would not stop him from contriving his war on drugs.
"The war or the drive against drugs will not stop and it will last until the day I step out," Duterte said.