Philippine Supreme Court Clarifies Treachery and Witness Credibility in Murder Conviction

People v. Mallari y Sanchez (G.R. No. 103547, July 20, 1999) is a significant ruling from the Supreme Court's First Division that affirms key principles in Philippine criminal procedure: the sufficiency of a lone eyewitness's testimony, the non-applicability of the presumption of suppressed evidence to corroborative witnesses, and the elements of treachery in murder cases.

The Facts of the Case

On the evening of December 9, 1990, Alfredo Mendoza was drinking beer with companions Wilfredo Eyas and Ricardo Borja at a street corner in Binondo, Manila. While Mendoza was pouring beer into his glass, accused-appellant Romeo Mallari suddenly appeared from behind and stabbed him once in the chest with a pointed weapon. Mallari then casually walked away and fled.

Mendoza was rushed to a hospital but was pronounced dead on arrival. The medico-legal officer found that he died of a "penetrating stab wound right anterior thorax appearing at the right ventricle of the heart," and opined that the assailant was standing when he attacked his seated victim.

Mallari was later apprehended in connection with a separate robbery with homicide case. In a police line-up of seven persons, Eyas positively identified him as the killer. Mallari denied the charge, claiming he was resting at home in Makati on the day of the incident and that police officers maltreated him and demanded money to drop charges against him.

The Issues Raised on Appeal

Mallari raised several assignments of error before the Supreme Court:

1. Suppression of evidence – He argued that the prosecution's failure to present Ricardo Borja, the other drinking companion, amounted to suppression of evidence under Rule 131 of the Rules of Court.

2. Incredible eyewitness testimony – He claimed that Eyas's account of the stabbing did not jibe with medical findings and defied human experience, particularly regarding the mechanics of the attack.

3. Hearsay evidence – He argued that the testimony of police officer Pfc. Obrero regarding information from "Aling Vicky" was hearsay.

4. Treachery not proven – He contended that the elements of treachery were not established.

The Supreme Court's Ruling

The Court affirmed Mallari's conviction for murder, rejecting all his arguments.

On Suppression of Evidence

The Court held that the presumption of suppressed evidence is not applicable when the evidence is merely corroborative or cumulative. Citing People v. Pagal and People v. Jumanoy, the Court ruled that the prosecution has the exclusive prerogative to determine which witnesses to present, and need not present all witnesses if those presented are sufficient to establish guilt beyond reasonable doubt.

The Court also noted that Borja was at the disposal of both parties—both had subpoenaed him, but he failed to appear. There was no proof that the prosecution prevented Borja from testifying.

On the Lone Eyewitness Rule

The Court reiterated the well-entrenched rule that the testimony of a lone eyewitness, if positive and credible, is sufficient to support a conviction. As the Court stated, "witnesses are to be weighed, not numbered." Corroborative evidence is necessary only when there are reasons to suspect that the witness falsified the truth or that his observation was inaccurate.

The trial court found nothing to indicate that Eyas falsified the truth, and his testimony was corroborated by the medical findings.

On the Defense's "Human Experience" Argument

The Court rejected Mallari's argument that it was physically impossible to stab the victim in the manner described without leaning back or touching the victim's shoulders. The Court noted that "the cold pages of the records do not graphically convey every minute detail that transpired in the lower court," and that this is precisely why appellate courts rely on the factual findings of trial courts, which are in a unique position to observe witness deportment.

On the Hearsay Argument

The Court held that Pfc. Obrero's testimony about being informed by Aling Vicky that Eyas was a drinking companion was not hearsay. Citing People v. Cusi, Jr., the Court explained that when a statement is placed on record merely to establish that the statement was made—not to prove the truth of the fact asserted—it is an "independently relevant statement" and an exception to the hearsay rule.

On Treachery

The Court found that treachery attended the commission of the crime. Mallari stealthily approached the seated Mendoza from behind while the latter was pouring beer into his glass. The stabbing was executed swiftly, and the suddenness of the attack deprived Mendoza of any opportunity to defend himself. Citing People v. Villanueva, the Court held that an attack from behind, executed stealthily and quickly, constitutes treachery.

Practical Takeaways

• A single credible eyewitness can sustain a conviction. The prosecution need not present every available witness; it may choose which witnesses to present as long as the quantum of proof—guilt beyond reasonable doubt—is met.

• The presumption of suppressed evidence has limits. It does not apply when the witness is merely corroborative or cumulative, or when the evidence is equally available to the defense.

• Statements offered to show they were made, not for their truth, are not hearsay. This distinction is crucial in criminal trials where police officers testify about information they received during investigations.

• Treachery can be established by the suddenness and manner of attack. An attack from behind, executed swiftly without warning, deprives the victim of any chance to defend himself and ensures the offender's safety from any defense the victim might make.

• Appellate courts defer to trial courts on credibility findings. Trial courts are in the best position to observe witnesses' deportment, demeanor, and sincerity during testimony.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.