Title
People vs. Ma. Del Pilar Rosario C. Casa a.k.a. "Marfy Calumpang," "Madam," and "Mah-Mah"
Case
G.R. No. 254208
Decision Date
Aug 16, 2022
Accused acquitted due to prosecution's failure to comply with chain of custody rules, compromising evidence integrity in drug charges.

Case Summary (G.R. No. 254208)

Factual Background

The prosecution alleged that on July 21, 2015 a police buy‑bust operation at Cadawinonan Housing Project, Dumaguete City resulted in the sale of one heat‑sealed sachet containing 0.13 gram of methamphetamine hydrochloride and the possession of an additional eleven sachets with an aggregate weight of 10.99 grams. The buy‑bust was the product of surveillance based on information from a confidential informant. Police Officer I Darelle Jed Delbo acted as the poseur‑buyer and testified that he paid marked money of P500, that accused‑appellant handed him one sachet and that, upon confirmation, he signaled the backup team which effected the arrest and seized the additional sachets and a container. Forensic examination by PCI Llena yielded positive results for methamphetamine hydrochloride for the seized items and for the urine of the accused.

Trial Court Proceedings and Judgment

At trial the accused pleaded not guilty and testified that she was seized by police while in the area, denied involvement in any sale, and claimed she first saw the alleged drugs only at the police office. The RTC found the prosecution witnesses credible, accepted the narrative of a legitimate buy‑bust, held that the arresting officers followed required procedures, and concluded that the elements of illegal sale and illegal possession under Sections 5 and 11, Article II of R.A. No. 9165, as amended, were proven beyond reasonable doubt. The RTC imposed penalties of life imprisonment and fines under the applicable statutory provisions and ordered confiscation and forfeiture of the seized sachets.

Court of Appeals Ruling

The Court of Appeals affirmed the RTC in a November 29, 2018 decision. It held that the accused was caught in flagrante delicto during a legitimate entrapment, that the prosecution established the elements of sale and possession, and that the police preserved the integrity and evidentiary value of the seized items. The CA credited the presumption of regularity in the performance of the arresting officers’ duties and rejected the accused’s claims of denial and frame‑up.

Issues on Appeal

Accused‑appellant raised three principal assignments of error: (1) that the RTC erroneously credited the uncorroborated and unreliable testimony of PO1 Delbo; (2) that the prosecution failed to prove compliance with Section 21 of R.A. No. 9165, as amended by R.A. No. 10640; and (3) that the prosecution’s evidence was insufficient to establish guilt beyond reasonable doubt for illegal sale and illegal possession.

Prosecution’s Case and Evidence

The prosecution presented seven witnesses, including the poseur‑buyer PO1 Delbo, backup officers, a PDEA agent, an intelligence officer, and a DOJ representative. Testimony described surveillance, a prearranged signal, the exchange of marked money for a sachet, the immediate call to the team leader, the arrest, marking of the purchased sachet and of the eleven other sachets and the container, an inventory at the Special Operations Group office attended by insulating witnesses, and laboratory findings that the seized items and the accused’s urine tested positive for methamphetamine.

Defense’s Case and Evidence

Accused‑appellant testified that she was returning to her mother’s house, stopped to buy gas, and was then dragged out by two men who later appeared as police. She denied selling or possessing drugs and asserted that she first saw the alleged contraband at the SOG office. She suggested a frame‑up motivated by her estranged husband’s alleged involvement in drug dealing. A police searcher testified she recovered nothing from accused‑appellant’s person.

Legal Standards for Sale, Possession, and Chain of Custody

The Court reiterated the elements of illegal sale and illegal possession under R.A. No. 9165 and emphasized that both crimes require proof beyond reasonable doubt of the occurrence of the transaction (sale) or of possession, and that the corpus delicti in drug cases is the drug itself. The decision reiterated that identity of the seized drug must be established with moral certainty and traced through an unbroken chain of custody from seizure to presentation in court. The Court reiterated established practice that the testimony of a poseur‑buyer must be scrutinized and that uncorroborated poseur testimony is often insufficient given the severity of the penalties and the risk of planting.

Assessment of the Proof of Sale and Possession

The Supreme Court found reasonable doubt as to both sale and possession. It observed that none of the backup officers actually saw the transaction despite being positioned 10–15 meters away, rendering the case dependent on the solitary testimony of the poseur‑buyer. The Court found aspects of PO1 Delbo’s account lacking or improbable, including his claim that accused‑appellant openly held a container of sachets throughout the period leading to arrest and that he knew the container contained shabu before examining it. The Court noted that the designated female searcher said she recovered nothing from the accused’s person. These inconsistencies and the absence of independent corroboration undermined confidence that a sale took place and that accused‑appellant possessed the additional sachets.

Chain of Custody Findings

On the chain of custody, the Court examined the three parts of Section 21(1) of R.A. No. 9165, as amended by R.A. No. 10640: the requirement of immediate inventory and photography in the presence of the accused and insulating witnesses; the rule as to venue and the “whichever is practicable” qualifier for warrantless seizures; and the saving clause permitting deviation for justifiable grounds so long as integrity and evidentiary value are preserved. The Court found multiple lapses: the Inventory/Receipt omitted an express statement that the inventory was conducted in the presence of the accused; the inventory and photography were done at the SOG office rather than at the place of seizure with only a general invocation of “security purposes” as justification; marking of the sachets used only the accused’s initials and date and omitted required particulars called for by PNP procedures (seizing officer’s initials, time, place); and the forensic chemist, PCI Llena, did not testify and the parties’ stipulation lacked the minimum details on receipt, resealing, marking and custody required to establish the fourth link. Those omissions produced breaks in the first and fourth links of the chain.

Application of the Saving Clause

The Court addressed the prosecution’s invocation of the saving clause in Section 21(1). It held that before invoking the clause the prosecution must establish two requisites: (1) justifiable grounds for departure from strict compliance; and (2) that integrity and evidentiary value were properly preserved. The Court concluded that the prosecution failed the first prong because the explanations for transferring inventory to the police station were conflicting and generic (one witness cited recent loss of a team member; another cited a crowd). The Court found the justifications insufficiently specific and inconsistent. The second prong also failed because the deficiencies in marking and the absence of adequate stipulations or testimony concerning laboratory handling created a gap in the chain and left doubts about preservation and custody.

Reasoning on Burden of Proof and Presumptions

The Court emphasized that the prosecution bears the heavy burden of proving every element beyond reasonable doubt and must rely on the strength of its evidence. It reiterated that the presumption of regularity in official duties does not override the constitutional presumption of innocence, and that procedural lapses that cast doubt on the integrity of the corpus delicti defeat proof beyond reasonable doubt. The Court applied precedents requiring heightened scrutiny of chain‑of‑custody compliance, particularly where quantities are small and the risk of planting is greater.

Disposition and Relief

The Supreme Court, finding reasonable doubt as to the elements of illegal s

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