The former president of the Philippines, Rodrigo Duterte, appeared before judges at the International Criminal Court in The Hague on Friday, days after his arrest in Manila on murder charges linked to the deadly “war on drugs” that he oversaw while in office.

THE HAGUE, Netherlands (AP) — Jailed former Philippines President Rodrigo Duterte appeared Friday by videoconference before judges at the International Criminal Court, days after his arrest in Manila on murder charges linked to the deadly “ war on drugs ” that he oversaw while in office.

The Philippine Senate has said it will investigate whether due process was upheld in the detention of ex-President Rodrigo Duterte. The probe has been initiated by Imee Marcos, the sister of President Ferdinand Marcos.