He urged the public to support the commission, saying victims of the bloody campaign need a venue where their accounts can be heard and documented.
The commission was launched as an independent, civilian-led body to investigate alleged extrajudicial killings linked to the drug war.
Its members include former International Criminal Court judge Raul Pangalangan as chairperson; forensic pathologist Raquel Fortun; human rights journalist and researcher Carlos Conde; theologian Fr. Daniel Franklin Pilario; trauma and peace scholar Al Fuertes; and Cardinal Pablo Virgilio “Ambo” David as adviser.
The commission said its work involves gathering accounts and evidence, documenting alleged abuses and recommending reforms to help prevent similar violations.