Duterte, 79, appeared at the hearing via videolink, with presiding judge Iulia Motoc citing his prior “long journey."

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.

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.

Following a request from the International Criminal Court (ICC), the Philippines arrested former President Rodrigo Duterte due to an investigation into thousands of killings in a violent crackdown on drugs that was the hallmark of his rule.

Former Philippine President Rodrigo Duterte was arrested by police at Manila’s international airport Tuesday on order of the International Criminal Court in connection with a case of crime against humanity filed against him,

Investigators from the International Criminal Court (ICC) have not contacted the Senate to request documents related to the previous administration’s controversial war on drugs, Senate President Francis “Chiz” Escudero said.

The Philippine Senate said Monday it will conduct a formal probe of ex-president Rodrigo Duterte's arrest and swift handover last week to the International Criminal Court, which is to try him for alleged crimes against humanity.