Valdez v. People

Summary

This Supreme Court case involved the criminal prosecution of Arsenio Valdez for illegal possession of 25 grams of marijuana under R.A. No. 9165. Valdez was arrested without warrant by barangay tanods who found his behavior suspicious after alighting from a bus. The RTC and Court of Appeals convicted him, finding the evidence sufficient and relying on presumption of regularity. However, the Supreme Court reversed and acquitted Valdez, ruling that his warrantless arrest was unlawful as none of the circumstances under Section 5, Rule 113 were present, making the subsequent search illegal. The Court held that the seized marijuana was inadmissible as fruit of the poisonous tree, and that the prosecution failed to establish the chain of custody with material inconsistencies in witness testimonies. The decision emphasized that the constitutional right against unreasonable searches and seizures cannot be compromised even in drug cases, and that the presumption of regularity cannot overcome the presumption of innocence or substitute for proof beyond reasonable doubt.