Title
People vs. Mamaril
Case
G.R. No. 171980
Decision Date
Oct 6, 2010
A woman convicted for illegal shabu possession challenged the validity of a search warrant and alleged police frame-up; the Supreme Court upheld her conviction, affirming the search's legality and dismissing her claims due to insufficient evidence.

Case Summary (G.R. No. 171980)

Petitioner

People of the Philippines

Respondent

Olive Rubio Mamaril

Key Dates

Search and seizure: March 25, 2003 (9:30 PM)
Trial court conviction: April 21, 2004
Court of Appeals decision: August 31, 2005
Supreme Court decision: October 6, 2010

Applicable Law

• 1987 Philippine Constitution (presumption of innocence, protection against unreasonable searches and seizures)
• Republic Act No. 9165, Section 11, Article II (possession of dangerous drugs)
• Rules of Court, Rule 131, Section 3 (presumption of regularity of official duty)
• Rules on Criminal Procedure, Rule 126, Section 6 (search warrant requirements)

Procedural History

The trial court convicted Mamaril of illegal possession of methamphetamine hydrochloride (“shabu”) under Section 11, Article II of RA 9165. The Court of Appeals affirmed the conviction and sentence (12 years and 1 day to 20 years imprisonment, PHP 300,000 fine). Mamaril then appealed to the Supreme Court.

Search Operation and Seizure

Acting on Search Warrant No. 144C dated March 18, 2003, SPO4 Gotidoc and allied law enforcement personnel, in the presence of Barangay Kagawad Tabamo and after informing the appellant, searched the residence at Zone 1, Barangay Maliwalo, Tarlac City. They found one plastic sachet of white crystalline substance atop the refrigerator.

Laboratory Examination

The seized item was examined by Forensic Chemist Engr. Marcene Agala at the Tarlac Provincial Crime Laboratory. Qualitative testing confirmed the substance as 0.055 gram of methamphetamine hydrochloride.

Defense Allegations

Appellant claimed (1) the primary search yielded nothing, (2) the sachet was found only after police asked about her sleeping quarters, (3) police demanded PHP 20,000 to suppress charges, and (4) officers planted the drug when she refused to pay. She admitted she did not report the alleged extortion to superiors.

Trial Court Ruling

On April 21, 2004, the court found the prosecution proved the three elements of illegal possession beyond reasonable doubt: possession of a regulated drug, lack of legal authorization, and conscious and voluntary control. The defense failed to introduce sufficient evidence to create reasonable doubt.

Court of Appeals Ruling

The appellate court sustained the trial court’s findings, ruling that the search and seizure were legal and that the “shabu” was admissible. It affirmed the sentence imposed.

Issues on Further Appeal

Through new counsel, appellant challenged (1) the absence of probable cause supporting the search warrant, and (2) the application of the presumption of regularity over the constitutional presumption of innocence.

Elements of Possession Established

The Supreme Court concurred that all statutory elements under RA 9165 were present and not rebutted. Appellant’s frame-up claim lacked credible supporting evidence.

Frame-up Allegation and Presumptions

The Court emphasized that allegations of planting must be supported by strong, conv

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