People vs. Omamos

The chain of custody under Section 21 of Republic Act No. 9165 is mandatory; the failure to mark the seized drug at the place of arrest in the accused’s presence, to conduct a physical inventory and photograph in the presence of the required witnesses, and to present the forensic chemist’s testimony on the handling and safekeeping of the specimen breaks the chain and erodes the identity of the corpus delicti, entitling the accused to an acquittal.

On July 16, 2008, acting on a tip that Mike Omamos y Pajo would bring a large quantity of marijuana to Cagayan de Oro City, a police team conducted a buy-bust operation at the Carmen Public Market. An informant acted as poseur-buyer and, after a brief conversation, handed appellant a marked P20 bill and a fake P1,000 bill in exchange for a plastic bag of dried marijuana leaves. Upon a pre-arranged signal, the officers arrested appellant, recovered the buy-bust money, and later brought him and the seized item to the CAIDTF office. The item was submitted for laboratory examination and tested positive for marijuana. Appellant was charged under Section 5, Article II of R.A. 9165, tried, and convicted.

• The Buy-Bust Operation: On July 16, 2008, around 1:45 p.m., a police team led by PO3 Vicente, based on an informant’s tip that appellant would be bringing marijuana from Talakag, Bukidnon, conducted a buy-bust at Carmen Public Market, Cagayan de Oro City. The informant, designated as poseur-buyer, met appellant near the CEED office, handed over a marked P20 bill and a fake P1,000 bill, and received a plastic bag of dried marijuana leaves. After confirming its contents, the informant removed his bull cap—the pre-arranged signal—prompting the officers, who were four to eight meters away, to arrest appellant.

• Arrest, Recovery, and Marking: The officers introduced themselves, informed appellant of his offense and constitutional rights, and recovered the buy-bust money. The seized transparent plastic bag was heat-sealed by PO3 Pacampara, not at the place of arrest, but later at the CAIDTF office in the Maharlika Police Station. He marked it “Exhibit-A MPO,” affixed his signature, and wrote the date of arrest. Appellant was not present during the marking.

• Inventory and Photograph: When PO3 Pacampara was asked whether an inventory was prepared, he stated he thought the custodian officer prepared it. He claimed photographs were taken but conceded he was unable to secure their printouts. No inventory or photographs were offered in evidence, nor did the prosecution explain their absence.

• Laboratory Examination and Stipulation: The seized item was sent to the PNP Crime Laboratory. The testimonies of Forensic Chemist PSI Erma Condino Salvacion and SPO4 Jerry Abella were dispensed with by stipulation. The stipulation as to PSI Salvacion covered only her findings that the specimen weighed 110.1 grams and tested positive for cannabis sativa. No evidence was introduced regarding how she received, stored, handled, or analyzed the specimen from the time it reached her until its presentation in court.

• Defense Version: Appellant denied the charge. He claimed that at around 10:00 a.m. on July 16, 2008, while on his way to a fiesta, he was accosted by two drunk men, dragged into a taxicab, and taken to the Maharlika Police Station. There, the police demanded money and, when he had none, allegedly forced him to choose between robbery or drug charges. He was made to hold a P20 bill and marijuana with both hands while photographs were taken, a police officer holding him by the neck. He asserted he was never informed of his constitutional rights.

• Trial Court and Appellate Court Findings: The trial court found appellant caught in flagrante delicto, gave full credence to the arresting officers’ testimonies, and presumed chain of custody compliance absent contrary evidence. The Court of Appeals affirmed, holding that the prosecution established the elements of the offense and that the arresting officers had complied with Section 21 of R.A. 9165, thereby preserving the integrity of the seized drug.

• Chain of Custody: Appellant argued that the prosecution failed to establish the chain of custody of the corpus delicti, pointing to the lack of immediate marking at the place of arrest, the absence of an inventory and photographs, and the insufficient stipulation regarding the forensic chemist’s handling of the specimen.

• Exculpatory Evidence: Appellant contended that the trial court unjustly dismissed his defense of denial and frame-up, asserting that the police officers arbitrarily accosted him and coerced him into posing with the contraband.

• Presumption of Regularity: Appellant faulted the courts below for applying the presumption of regularity in favor of the arresting officers despite the manifest procedural lapses.

• Sufficiency of Evidence: The Office of the Solicitor General maintained that the prosecution proved all elements of illegal sale through the testimony of PO3 Pacampara, the pre-operational documentation handled by SPO4 Abella, and the positive chemical findings of PSI Salvacion.

• Chain of Custody Compliance: The OSG argued that the arresting officers complied with Section 21 of R.A. 9165, and that the integrity and identity of the drug specimen had been duly preserved.

• First Link — Marking: Whether the marking of the seized drug at the police station, instead of at the place of arrest and in the presence of the accused, constituted compliance with the first link of the chain of custody.

• First Link — Inventory and Photograph: Whether the arresting officers’ failure to conduct a physical inventory and take photographs of the seized drug, as required by Section 21(1) of R.A. 9165, and to present these in evidence, broke the first link of the chain of custody.

• Fourth Link — Forensic Chemist’s Testimony: Whether the stipulation dispensing with the forensic chemist’s testimony, which omitted details of her handling, storage, and analysis of the specimen, satisfied the fourth link of the chain of custody.

• Saving Clause and Presumption of Regularity: Whether the prosecution’s unexplained non-compliance with the mandatory requirements of Section 21 could be excused under the saving clause of the Implementing Rules and Regulations of R.A. 9165 or by reliance on the presumption of regularity in the performance of official duty.

• First Link — Marking: The failure to mark the seized marijuana at the place of arrest and in the appellant’s presence broke the first link. Marking is the starting point of the custodial link; it must be done immediately upon confiscation to prevent switching, planting, or contamination. Because the marking occurred only at the police station, and without appellant present, serious doubts arose as to whether the item presented in court was the same one seized during the buy-bust. The ruling in People v. Lumaya and People v. Dela Victoria, where convictions were reversed for identical lapses, was controlling.

• First Link — Inventory and Photograph: The absence of any physical inventory and photographs of the seized drug constituted an additional breach of the first link. PO3 Pacampara’s evasive testimony and the prosecution’s failure to offer these documents in evidence—without any explanation—meant that the mandatory requirements of Section 21(1) were not met. Under People v. Alagarme and People v. Arposeple, such omission militates against a finding of guilt because the integrity of the corpus delicti cannot be deemed preserved.

• Fourth Link — Forensic Chemist’s Testimony: The stipulation as to PSI Salvacion’s testimony covered only her laboratory findings, not the details of how she received, handled, stored, and analyzed the drug specimen. The fourth link requires the forensic chemist to testify on these custodial details to assure that the evidence was not altered while in her possession. Absent such evidence, the final link was broken, consistent with People v. Dahil and Castro, where an acquittal was ordered under similar circumstances.

• Saving Clause and Presumption of Regularity: The saving clause under Section 21(a) of the IRR of R.A. 9165—which allows non-compliance on justifiable grounds provided the evidence’s integrity is preserved—did not apply. The arresting officers offered no explanation whatsoever for their multiple failures; thus, the condition for leniency remained unfulfilled. The presumption of regularity in official duty could not cure the defects because that presumption arises only when no irregularity appears on record, and in any event, the presumption of innocence in favor of the accused outweighs the presumption of regularity.

• Chain of Custody in Dangerous Drugs Cases — To secure a conviction for illegal sale of dangerous drugs, the prosecution must establish an unbroken chain of custody over the seized item, proving its identity and integrity with moral certainty. The four links are: (1) seizure and marking by the apprehending officer; (2) turnover to the investigating officer; (3) turnover to the forensic chemist; and (4) turnover and submission to the court. A break in any link raises reasonable doubt and compels acquittal.

• Immediate Marking in the Accused’s Presence — Marking is the starting point of the custodial link and must be done immediately upon confiscation at the place of arrest in the accused’s presence. Marking at the police station, without the accused, is defective and casts doubt on the identity of the corpus delicti.

• Mandatory Inventory and Photograph — Section 21(1) of R.A. 9165 requires that immediately after seizure, the apprehending team conduct a physical inventory and photograph of the seized drugs in the presence of the accused or his representative, a media representative, a DOJ representative, and an elected public official. The prosecution’s failure to present the required inventory and photographs, without justification, vitiates the chain of custody.

• Forensic Chemist’s Testimony on Handling — The forensic chemist must personally testify on the details of custody and analysis: when and from whom the drug was received, identifying labels, a description of the specimen and its container, and the method of analysis. A stipulation that omits these details is insufficient to establish the fourth link.

• Saving Clause and the Presumption of Regularity — The saving clause under the IRR of R.A. 9165 applies only when the prosecution demonstrates justifiable grounds for non-compliance and shows that the integrity of the evidence was nonetheless preserved. The presumption of regularity in official duty cannot supplant compliance with the express safeguards of Section 21, especially when multiple unexplained breaches appear on the record; the presumption of innocence prevails.

• “The metaphorical chain did not link at all, albeit it unjustly deprived petitioner of his right to liberty.” — Captures the complete failure of the prosecution to establish the chain of custody.

• “Marking after seizure is the starting point in the custodial link. It is vital that the seized contraband be immediately marked because succeeding handlers of the specimens will use the markings as reference.” — Explains the critical function of immediate marking.

• “The pernicious practice of switching, planting or contamination of the corpus delicti under the regime of RA 6425, otherwise known as the ‘Dangerous Drugs Act of 1972,’ could again be resurrected if the lawful requirements were otherwise lightly brushed aside.” — Underscores the strict compliance required to prevent abuse.

• “The presumption of regularity cannot be stronger than the presumption of innocence in favor of the accused.” — A foundational evidentiary principle applied when police officers fail to follow statutory safeguards.

• People v. Hementiza, 807 Phil. 1017 (2017) — Enumerated the four links in the chain of custody that the prosecution must prove; followed.

• People v. Lumaya, G.R. No. 231983, March 7, 2018 — Acquitted the accused where the seized drug was marked not at the place of arrest; followed.

• People v. Dela Victoria, G.R. No. 233325, April 16, 2018 — Acquitted the accused because marking was done without the accused’s presence; followed.

• People v. Alagarme, 754 Phil. 449 (2015) and People v. Arposeple, G.R. No. 205787, November 22, 2017 — Held that the failure to prepare the required inventory and photographs militates against guilt; followed.

• People v. Dahil and Castro, 750 Phil. 212 (2015) — Acquitted the accused where the forensic chemist’s testimony failed to cover the handling and safekeeping of the specimen; applied.

• Section 5, Article II, Republic Act No. 9165 — Defines and penalizes the illegal sale of dangerous drugs; the offense charged in the Information.

• Section 21(1), Republic Act No. 9165 — Mandates the immediate physical inventory and photograph of seized drugs in the presence of the accused, a media representative, a DOJ representative, and an elected public official. Non-compliance by the apprehending officers, without justification, broke the chain of custody.

• Section 21(a), Implementing Rules and Regulations of R.A. 9165 — Complements Section 21(1) and contains the saving clause allowing non-compliance upon justifiable grounds so long as the integrity and evidentiary value of the seized items are preserved. The clause was inapplicable because no justification was offered.

• Board Regulation No. 1, Series of 2002 — Requires the forensic chemist to testify on the details of custody and analysis. The stipulation that dispensed with the chemist’s testimony omitted these details, breaching the fourth link.

Carpio, Senior Associate Justice (Chairperson), Perlas-Bernabe, Caguioa, and J. Reyes, Jr., JJ., concurred.