Tan vs. People

A conviction for illegal sale of dangerous drugs cannot stand where the prosecution fails to satisfy the "objective test" by clearly establishing the details of the transaction—including the initial contact between the poseur-buyer and the accused, the offer to purchase, and the consummation of the sale—particularly when the poseur-buyer is not presented and the testifying officer observed the transaction from a distance without personal knowledge of the exchange. Furthermore, the identity and integrity of seized drugs must be established through an unbroken chain of custody with clear accounting for each transfer and handling from seizure to courtroom presentation; failure to account for gaps or discrepancies in weight creates reasonable doubt. Finally, evidence obtained from a search conducted without the presence of the lawful occupant or two witnesses residing in the same locality, as required by Section 8, Rule 126 of the Rules of Court, is inadmissible under the exclusionary rule.

Members of the Philippine National Police (PNP) Dipolog City Station Anti-Vice Team conducted surveillance operations against Jasper Tan y Sia beginning the last week of May 2002. On June 21, 2002, the police applied for a search warrant with Judge Eustolia Mata of the Municipal Trial Court in Cities (MTCC) Branch 2. The following day, police officers conducted a buy-bust operation at the gate of Jasper's house located at the corner of Magsaysay and Tomas Claudio Streets in Miputak, Dipolog City. After the operation, the police served the search warrant on Jasper, searched his room, and recovered drug paraphernalia and plastic sachets containing white crystalline substances alleged to be shabu. The prosecution charged Jasper with illegal sale of dangerous drugs (Criminal Case No. 11265) for a transaction on June 22, 2002, involving approximately 0.10 gram of shabu, and illegal possession (Criminal Case No. 11266) for approximately 2.74 grams of shabu recovered during the search on June 23, 2002.

The Buy-Bust Operation: On June 22, 2002, at approximately 2:15 p.m., police officers conducted a buy-bust operation at the gate of Jasper's house at the corner of Magsaysay and Tomas Claudio Streets in Miputak, Dipolog City. PO2 Jose Rizaldy Calibugar gave two marked P100 bills to a confidential informant who acted as the poseur-buyer. The police officers positioned themselves 10 to 15 meters away from the transaction site, hiding from view. PO2 Jose testified that he saw Jasper give shabu to the poseur-buyer in exchange for P200. Immediately after the exchange, the police officers arrested Jasper, handcuffed him, and served the search warrant dated June 21, 2002.

The Search and Seizure: Following the arrest, the police fetched Barangay Captain Emerenciana Velasco and proceeded to search Jasper's room on the second floor of the house. The search was conducted in the presence of the barangay captain but without Jasper's presence, as he had already been handcuffed and taken into custody. The police recovered the marked money (P2,100), drug paraphernalia, and white crystalline substances contained in six large and two small plastic sachets found on a table and on top of a cabinet.

Chain of Custody Lapses: PO2 Jose did not testify as to who marked the seized items, when the marking occurred, or where it took place. Regarding the items recovered in Criminal Case No. 11266, PO2 Jose testified that they "turned over the confiscated shabu to the person who issued the search warrant" and that the items were weighed at Agencia Dipolog by a certain Elma Bacho. However, PO2 Jose could not clarify who made the handwritten entries on the certification regarding the weight of the drugs, stating initially that it was someone from the pawnshop but later stating it was done at the police station. The prosecution failed to establish how the items were delivered from the weighing location to the crime laboratory in Zamboanga City. Furthermore, PO2 Jose did not identify the seized items in court as the same evidence presented during trial.

Forensic Examination Discrepancies: PSI Susan Memoracion Cayabyab, the forensic chemical officer, testified that the net weight of the shabu in Criminal Case No. 11265 was 0.0628 grams (gross weight 0.1629 grams), contradicting the Information which alleged 0.10 grams. In Criminal Case No. 11266, the Information alleged 2.74 grams, but the forensic chemist testified the net weight was 2.0946 grams (gross weight 2.7643 grams).

Defense: Jasper interposed the defense of denial and frame-up, alleging that the police had no valid basis for the operation and that the evidence was planted.

• Invalidity of the Buy-Bust Operation: Petitioner argued that the prosecution failed to establish the details of the purported sale transaction, including the initial contact between the poseur-buyer and Jasper, the offer to purchase, and the agreement on price. The testimony of PO2 Jose was insufficient as he was merely an observer positioned 10 to 15 meters away and was not privy to the actual conversation or exchange.
• Non-Presentation of the Poseur-Buyer: Petitioner maintained that the failure to present the poseur-buyer, who was also the confidential informant, was fatal to the prosecution's case because no other competent eyewitness could testify on the actual sale transaction.
• Break in the Chain of Custody: Petitioner asserted that the prosecution failed to account for each link in the chain of custody, including the marking of the seized items, the turnover from the poseur-buyer to the police, the weighing procedure, and the delivery to the forensic laboratory. The discrepancies in the weight of the drugs as alleged in the Informations and as testified to by the forensic chemist further undermined the integrity of the evidence.
• Invalid Search: Petitioner contended that the search was invalid because it was conducted without his presence as the lawful occupant, violating Section 8 (formerly Section 7), Rule 126 of the Rules of Court, which requires the presence of the lawful occupant or, in his absence, two witnesses residing in the same locality.

• Sufficiency of Evidence: Respondent countered that the prosecution clearly established Jasper's guilt beyond reasonable doubt for both illegal sale and illegal possession, having proven the conduct of the buy-bust operation and the subsequent lawful search.
• Non-Presentation of Informant: Respondent argued that the non-presentation of the informant who acted as poseur-buyer is not essential to the prosecution's case, provided that the unbroken chain of custody of the illegal drugs was established and the integrity and evidentiary value thereof were not compromised.
• Validity of the Search Warrant: Respondent maintained that there was a lawful search by virtue of a valid search warrant and that the procedural requirements were substantially complied with.
• Defense of Denial: Respondent asserted that Jasper's defense of denial could not overcome the positive identification and the presumption of regularity in the performance of official duties by the police officers.

• Objective Test for Buy-Bust Operations: Whether the prosecution established the validity of the buy-bust operation through the "objective test" by proving the details of the transaction between the poseur-buyer and the accused.
• Chain of Custody: Whether the prosecution established an unbroken chain of custody of the seized dangerous drugs sufficient to prove the identity and integrity of the corpus delicti.
• Validity of Search: Whether the search conducted pursuant to the search warrant was valid considering the absence of the lawful occupant during the search of his room.
• Admissibility of Evidence: Whether the seized drugs are admissible as evidence given the procedural violations in the conduct of the buy-bust operation, the chain of custody, and the execution of the search warrant.

• Objective Test for Buy-Bust Operations: The buy-bust operation was not established. The "objective test" requires clear and adequate details of the transaction, including the initial contact, the offer to purchase, the promise or payment, and the consummation of the sale. PO2 Jose's testimony was insufficient because he observed the transaction from 10 to 15 meters away while hiding, had no personal knowledge of what transpired between Jasper and the poseur-buyer, and could not hear the conversation. The non-presentation of the poseur-buyer, who was also the confidential informant, proved fatal because no other eyewitness could testify on the actual sale. The presumption of regularity in the performance of duty cannot prevail over the constitutional presumption of innocence.
• Chain of Custody: An unbroken chain of custody was not established. The prosecution failed to account for critical gaps: (1) in Criminal Case No. 11265, how the item purchased during the buy-bust was turned over to the police; (2) the marking of the seized items was not testified to; (3) the weighing was conducted at a pawnshop by an individual whose authority was not established, with contradictory testimony regarding who made the weight entries; and (4) the turnover to the forensic laboratory was not clearly established. Furthermore, PO2 Jose did not identify the seized items in court as the same evidence presented. The discrepancies in weight between the Informations and the forensic chemist's testimony (0.10g vs. 0.0628g in Case 11265; 2.74g vs. 2.0946g in Case 11266) created persistent doubt as to the identity of the corpus delicti.
• Validity of Search: The search was invalid. Section 8, Rule 126 of the Rules of Court requires that no search of a house or room shall be made except in the presence of the lawful occupant or any member of his family, or in their absence, two witnesses of sufficient age and discretion residing in the same locality. Jasper was handcuffed and arrested before the search of his room; he was not present to witness the search. Only the barangay captain was present, which does not satisfy the statutory requirement. Police officers do not have discretion to substitute their choice of witness for those prescribed by the rules.
• Admissibility of Evidence: The seized drugs are inadmissible. Failure to comply with the safeguards in Section 8, Rule 126 renders the search unreasonable, and the exclusionary rule applies. Evidence obtained in violation of this constitutional mandate is inadmissible for any purpose. Without the confiscated shabu, no evidence remains to convict Jasper.

• Objective Test for Buy-Bust Operations — Originating from People v. Doria, this test requires that the details of the purported transaction be clearly and adequately shown, including the initial contact between the poseur-buyer and the pusher, the offer to purchase, the promise or payment of consideration, and the consummation of the sale by delivery of the illegal drug. Mere observation from a distance without personal knowledge of the transaction details is insufficient. The non-presentation of the poseur-buyer is excusable only when such testimony is merely corroborative and another competent eyewitness can testify on the sale; otherwise, the non-presentation is fatal.
• Chain of Custody in Dangerous Drugs Cases — The identity and integrity of the seized drugs must be established with moral certainty by showing the duly recorded authorized movements and custody of the drugs from seizure to receipt by the investigating officer, turnover to the forensic laboratory, and presentation in court. Marking must be done immediately upon seizure to separate the marked articles from other similar items. Gaps in the chain of custody, including failure to account for handling, marking, weighing, and transmission, create reasonable doubt as to the identity of the corpus delicti.
• Exclusionary Rule for Unreasonable Searches — Evidence obtained in violation of Section 8, Rule 126 of the Rules of Court (requiring the presence of the lawful occupant or two local witnesses during searches) is inadmissible in any proceeding for any purpose. This rule ensures that fundamental rights against unreasonable searches are upheld and that implementing officers do not act arbitrarily. Violation of this requirement is punishable under Article 130 of the Revised Penal Code (Searching domicile without witnesses).
• Presumption of Innocence vs. Presumption of Regularity — The constitutional presumption of innocence requires courts to take more than casual consideration of every circumstance or doubt favoring the accused. The presumption of regularity in the performance of official duties by law enforcement officers cannot prevail over the presumption of innocence.

• "The right of the accused to be presumed innocent until proven guilty is a constitutionally protected right. To overturn this presumption, the prosecution must proffer proof beyond reasonable doubt, or that quantum of proof sufficient to produce a moral certainty as to convince and satisfy the conscience of those who act in judgment."
• "The 'objective test' requires the details of the purported transaction during the buy-bust operation to be clearly and adequately shown, i.e., the initial contact between the poseur-buyer and the pusher, the offer to purchase the drug, and the promise or payment of the consideration, payment using the buy-bust or marked money, up to the consummation of the sale by the delivery of the illegal drug subject of the sale..."
• "The presumption of regularity of performance of duty cannot prevail over the constitutional presumption of innocence of the accused."
• "The identity of the seized drugs is established by showing the duly recorded authorized movements and custody of seized drugs from the time of seizure or confiscation to receipt by the investigating officer then turn-over to the forensic laboratory up to presentation in court."
• "Failure to comply with the safeguards provided by law in implementing the search warrant makes the search unreasonable. Thus, the exclusionary rule applies, i.e., any evidence obtained in violation of this constitutional mandate is inadmissible in any proceeding for any purpose."

• People v. Doria, 361 Phil. 595 (1999) — Established the "objective test" for determining the validity of buy-bust operations; followed and applied to invalidate the buy-bust operation where details were insufficient.
• People v. Deliña, G.R. No. 243578, June 30, 2020 — Cited for the principle that police officers positioned 8 to 10 meters away from the transaction lacked personal knowledge; followed in finding PO2 Jose's testimony insufficient.
• People v. Conlu, G.R. No. 225213, October 3, 2018 — Cited for the principle that officers approximately 10 meters away were insufficient observers; followed.
• People v. Casacop, 755 Phil. 265 (2015) — Cited for the principle that an officer merely observing from 7 meters away was insufficient; followed.
• People v. Go, 457 Phil. 885 (2003) — Cited regarding the requirement of Section 8, Rule 126 that police officers do not have discretion to substitute their choice of witness for those prescribed by the rules; followed in invalidating the search.

• Section 15, Article III, Republic Act No. 6425 (Dangerous Drugs Act of 1972) — Penalizes the unauthorized sale, distribution, and delivery of regulated drugs; applied in determining the elements of the offense charged in Criminal Case No. 11265.
• Section 16, Article III, Republic Act No. 6425 — Penalizes the unauthorized possession and control of regulated drugs; applied in determining the elements of the offense charged in Criminal Case No. 11266.
• Section 8 (formerly Section 7), Rule 126, Rules of Court — Provides that no search of a house, room, or premises shall be made except in the presence of the lawful occupant or any member of his family, or in their absence, two witnesses of sufficient age and discretion residing in the same locality; violated by the police conduct, leading to application of the exclusionary rule.
• Article 130, Revised Penal Code — Penalizes searching a domicile without witnesses; cited to emphasize the mandatory nature of the witness requirement during searches.

Perlas-Bernabe (Chairperson), Lazaro-Javier, Rosario, and J. Lopez, JJ., concurred.