"The war or the drive against drugs will not stop and it will last until the day I step out. If I go to prison, I go to prison," said Duterte on Monday, February 12.
He was speaking at the Vicente Sotto Memorial Medical Center in Cebu City.
Duterte said the ICC could not declare him guilty of a crime since merely threatening criminals with death is not a crime.
"Is there a crime threatening people, especially criminals?" asked Duterte. (READ: Duterte to ICC: 'If you find me guilty, go ahead')
The Philippine President earlier threatened to withdraw from the ICC. Presidential Spokesperson Harry Roque said the ICC preliminary examination is a "waste of time" as the Philippines' justice system is fully functioning, thus the international court, as a "court of last resort," has no jurisdiction over the drug war.