Former Philippine President Rodrigo Duterte is now in the custody of the International Criminal Court following his arrest in Manila in connection with his deadly war on drugs during his presidency, the ICC confirmed Wednesday.

Former Philippine President Rodrigo Duterte said he takes full responsibility for his administration's "war on drugs", in a video message posted on his Facebook account, as he braces for a legal battle at the International Criminal Court.

Former Philippine President Rodrigo Duterte is being flown to the Netherlands to face an International Criminal Court charge of crimes against humanity linked to the deadly crackdown on drugs he oversaw while in office.