The International Criminal Court has been investigating the deadly crackdown that Mr. Duterte, who was detained in Manila on Tuesday, oversaw while in power.

Police took him into custody on orders of the ICC, which has been investigating the massive killings that happened under the former president’s deadly crackdown against illegal drugs.

Former President Rodrigo Duterte was taken into custody on Tuesday after the Philippine government said it received an International Criminal Court (ICC) warrant for his arrest for alleged crimes against humanity.