Title
Mallillin y Lopez vs. People
Case
G.R. No. 172953
Decision Date
Apr 30, 2008
Police raid on petitioner's home yielded shabu; irregularities in search, chain of custody gaps led to Supreme Court acquittal due to reasonable doubt.
A

Case Summary (G.R. No. 172953)

Key Dates and Procedural History

Search and seizure: 4 February 2003.
Trial court conviction: Decision dated 20 June 2004, Regional Trial Court (Branch 52), Sorsogon City (convicted petitioner of illegal possession of methamphetamine hydrochloride).
Court of Appeals: Decision dated 27 January 2006 affirmed the conviction with modification of the sentence; motion for reconsideration denied on 30 May 2006.
Supreme Court review: petitioner filed a Rule 45 petition challenging the appellate decision; the Supreme Court ultimately reversed and acquitted for the reasons discussed below.

Facts of the Search and Seizure

A search warrant issued by the RTC of Sorsogon City authorized execution of a search of petitioner’s residence. A five‑member police team executed the warrant. The team allegedly recovered two filled plastic sachets of shabu and five empty sachets containing residue. The search was conducted in the presence of barangay kagawad Licup and members of petitioner’s household. Conflicting accounts exist about the circumstances immediately before the discovery: prosecution witnesses described a search yielding the items in the bedroom (a denim bag with empty sachets in a cabinet or behind the door, and two filled sachets falling from a pillow), while defense witnesses described a critical interlude during which petitioner was sent out on an errand and the bedroom search was conducted with petitioner absent.

Charge, Plea, and Trial Disposition at First Instance

Petitioner was charged under Section 11, Article II of RA 9165 for illegal possession of methamphetamine hydrochloride (shabu). He entered a negative plea. The trial court found petitioner guilty beyond reasonable doubt, sentenced him to twelve years and one day to twenty years’ imprisonment, imposed a fine of P300,000, and ordered forfeiture of the seized shabu.

Prosecution Evidence and Chain of Custody Testimony

Prosecution witnesses included Bolanos (team leader), Esternon (operative who searched the bedroom), and forensic chemist Arroyo. Bolanos testified that he supervised the search from about a meter away and that the search produced the sachets in petitioner’s bedroom. Esternon testified that he alone conducted the bedroom search, found the two filled sachets under a pillow, and called Gallinera to record and mark the items; he further testified that he brought the seized items to the police station, then to the trial court, and thereafter to the laboratory. Arroyo testified that the two filled sachets tested positive for shabu and that four of the five empty sachets contained shabu residue; she also testified that Ofelia Garcia received the items at the laboratory. Importantly, Gallinera (who allegedly recorded and marked the items) and Garcia (who received the items at the lab) did not testify at trial.

Defense Evidence and Material Contradictions

Petitioner testified that he was sent out to buy cigarettes during the search and was absent when the two filled sachets were allegedly discovered; he stated that Esternon later summoned him back to the bedroom, where the two sachets were shown. This account was corroborated in material respects by his wife Sheila, his mother Norma, and barangay kagawad Licup. Licup testified that after empty sachets were found and he left the bedroom, Esternon later exclaimed that he had found two filled sachets while alone inside the bedroom. The defense emphasized that petitioner was not present during the crucial interval when the filled sachets were found, and highlighted circumstances that made the presence and actions of Esternon in the bedroom suspicious.

Trial Court and Court of Appeals Reasoning

The trial court relied on the presumption that possession of the illicit items in petitioner’s house was prima facie evidence of animus possidendi (an intent to possess) and convicted petitioner. The court also noted petitioner’s failure to demonstrate that police officers were motivated to fabricate evidence. The Court of Appeals affirmed the conviction but modified the sentence to an indeterminate term (twelve years minimum to seventeen years maximum), likewise emphasizing the prosecution’s evidence and the presumption of regularity in police performance.

Supreme Court’s Analysis of Chain of Custody and Identity of the Exhibit

The Supreme Court emphasized that for illegal possession of dangerous drugs the corpus delicti (the drug itself) must be established beyond reasonable doubt. Because narcotic substances are not readily identifiable without chemical analysis, a reliable chain of custody is essential to remove reasonable doubt about the identity of the specimens actually tested and offered at trial. The Court explained the chain of custody requirement: testimony should, where material, cover every link from seizure to testing, identifying who handled the item, the condition it was in, how it was transferred, safeguards against tampering, and any records or markings that would prove continuity. A stricter application is required when items are small, fungible, or susceptible to tampering or substitution.

Specific Chain of Custody Failures in the Record

The Court identified significant gaps: (1) Gallinera, who allegedly recorded and marked the seized items at the scene, did not testify to confirm that the items marked at the scene were the same offered as exhibits; (2) Ofelia Garcia, who received the items at the laboratory, likewise did not testify; (3) no explanation was offered for these absences; (4) the prosecution did not establish an uninterrupted or reliable chain from seizure to laboratory testing. Given these lapses, the Court found no reasonable guarantee that the sachets examined in the laboratory and offered in evidence were the very items seized from petitioner’s residence, raising the possibility of tampering, substitution, contamination, or clerical error. The prosecution’s evidence on identity was therefore incomplete.

Irregularities in Search Conduct and Post‑Seizure Procedures

The Court catalogued additional procedural irregularities undermining the presumption of regularity: petitioner was dispatched on an errand during the search despite testimony that some officers were posted to prevent his flight—an inconsistency suggesting opportunity for tampering; Esternon was left alone in the bedroom and his conduct (including summoning pet

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