WATCH: CIDG chief reads Miranda rights to Duterte

Criminal Investigation and Detection Group (CIDG) chief Police Major General Nicolas Torre III on Tuesday read the Miranda rights to former President Rodrigo Duterte, who has been placed in the custody of authorities after the International Criminal Court ordered his arrest. 

The Miranda doctrine tells a suspect being arrested of his or her rights to remain silent and to have competent and independent counsel.

According to Prosecutor General Richard Fadullon, authorities observed due process by reading the Miranda rights and ensuring that the former president's dignity is protected.

“There is an existing warrant for his arrest issued by the ICC. If questions wish to be raised on the validity of the warrant, it should be raised before the court that issued it and not before the arresting officers implementing the same,” he said in a message to reporters.

“We are here only to ensure that the manner of arrest is done in accordance with the law,” he added.

Duterte was brought to a VIP lounge at Villamor Air Base’s Kalayaan Hall, also called 250 or the Presidential Airlift Wing, from the Ninoy Aquino International Airport (NAIA) Terminal 3 upon his arrival from Hong Kong. 

On Instagram, Veronica "Kitty" Duterte shared a story of her father with text, “Illegal detention. No warrant of arrest.”

Earlier on Tuesday, Malacañang confirmed that Duterte is in the custody of authorities after getting arrested for crimes against humanity.

Former presidential legal counsel Atty. Salvador Panelo branded the arrest as unlawful.

“It’s unlawful arrest. The PNP didn’t allow one of his lawyers to meet him at the airport and to question the legal basis for PRRD’s arrest,” Panelo said.

The former spokesman of the Duterte administration also said the current government's action would make the arresting team as well as the public officials ordering the arrest criminally liable.

Duterte had said he was ready to face the warrant of arrest issued by the ICC for his controversial war against illegal drugs, stressing that he would handle it directly as a lawyer and would not escape to another country.

The ICC has been investigating Duterte and other top officials of his administration for crimes against humanity over the alleged systematic drug war deaths in police operations.

These deaths reached around 6,000 based on police records, but human rights groups contend that the deaths were as much as 30,000, including vigilante killings.—Giselle Ombay and Joahna Lei Casilao/AOL/VBL, GMA Integrated News