>> reporter: edgar matobato says he and philippine president have something in common, they both have blood on their hands. >> translator: i want him to pay for what he did, for the many killings he ordered, he says. if we bring back the death penalty, i hope duerte is the first to hang. and then i will follow. decades before the president took his bloody war on drugs nationwide, matobato says he was part of a group known in the philippines as devout death suede. a 2008 investigation found a shadowy band of assassins was committing hundreds of murders, targeting street children and criminals, all during duerte's long run as the southern city's gun toting, crime fighting mayor beginning in 1988. i personally killed around 50 people, ma people, mat bought owe says. he shows us a journal with names and date of some of his victims,