FACTS: OIC Police Inspector Villanueva together with PO1 Mabutol, Jr., PO2 Pascua, and PO1 Valencia, formed a team for a buy-bust operation against Benjamin Amansec with the help of an informant. The informant then introduced Mabutol to Amansec as a drug addict. Mabutol had just told Amansec that he was going to purchase one hundred… Read More PEOPLE vs. AMANSEC G.R. No. 186131 December 14, 2011 R. A. No. 9165, Dangerous Drugs, buy-bust operation, Chain of Custody, Section 5, Article II of Republic Act No. 9165, Sale of Illegal Drugs, Non-Presentation of the Informant, Absence of Surveillance, Defense of Frame up and Denial