Koko Pimentel: Parallel Senate probe on Duterte drug war 'a good idea'
Although it is "optional," Senate Minority Leader Aquilino "Koko" Pimentel III said conducting a parallel Senate investigation into the war on drugs is a "good idea" so the credibility of the witnesses could be tested.
Tomas Kauer - Moderator 
Although it is "optional," Senate Minority Leader Aquilino "Koko" Pimentel III said conducting a parallel Senate investigation into the war on drugs is a "good idea" so the credibility of the witnesses could be tested.
