Reasonable Doubt Prevails: Acquittal in Highway Robbery Due to Inconsistent Testimony

In a significant ruling on the sufficiency of evidence in criminal cases, the Supreme Court reversed the conviction of four men sentenced to death for highway robbery under Presidential Decree No. 532. The Court held that when the prosecution's sole eyewitness gives testimony riddled with inconsistencies, and the accused present credible alibis, the constitutional presumption of innocence must prevail.

The Case: A Deadly Robbery in Intramuros

On September 8, 1995, a convoy of four vehicles carrying over P13 million for VMG Money Changer was ambushed along Palacio Street in Intramuros, Manila. Armed men in fatigue uniforms and bonnets opened fire, killing a police escort, wounding several others, and escaping with the money.

The National Bureau of Investigation (NBI) eventually arrested Ahmad Langalen, Hasim Upam, Samsudin Talib, and Abubakar Dagadas. The prosecution's case rested almost entirely on the testimony of Mohammad Mamison, who claimed to have been a lookout during the robbery and identified the four as participants. The Regional Trial Court convicted all four and imposed the death penalty.

The Issue: Was the Sole Eyewitness Credible?

The central question before the Supreme Court was whether Mamison's testimony, being the only evidence linking the accused to the crime, was sufficient to prove guilt beyond reasonable doubt.

The trial court found Mamison "straightforward, positive and credible." However, the Supreme Court applied an exception to the general rule that trial courts' credibility findings are respected: the trial court had ignored material inconsistencies that could affect the outcome of the case.

The Ruling: Inconsistencies Create Reasonable Doubt

The Supreme Court meticulously compared Mamison's account with the testimonies of the actual victims and police witnesses. The discrepancies were glaring:

• Vehicles used: Mamison claimed the robbers used an owner-type jeep and an L-300 van. But prosecution witnesses testified the attackers came from a green car, and a police officer was certain no jeep or van was involved.
• Appearance of attackers: Mamison said the men wore long-sleeved shirts and denim pants. The victims described them in green fatigue uniforms with bonnets covering their faces.
• Identification: Two victims categorically stated that none of the assailants was in the courtroom — even as all four accused were present.

The Court also noted that Mamison fled the scene before the actual robbery and never saw who took the money. Furthermore, NBI Agent Moises Tamayo admitted that an informant had named other individuals as the plotters — none of whom were the accused — and that Mamison himself was never formally charged or discharged as a state witness.

The Value of Corroborated Alibis

While alibi is often called the weakest defense, the Court emphasized it can prevail when supported by credible evidence and when the prosecution's identification is doubtful.

Ahmad Langalen presented a bank deposit slip showing he was at a Union Bank branch at the time of the robbery, corroborated by the bank's Assistant Vice President. Hasim Upam, a security guard, was proven by his supervisors to have been on duty at a hotel in Pasig the entire day. These were disinterested witnesses with no motive to lie.

Practical Takeaways

• One witness is not enough when riddled with contradictions. When a conviction rests solely on a single eyewitness whose account conflicts with other prosecution evidence, the prosecution has not met its burden.
• Alibi is not automatically worthless. Although generally weak, alibi can succeed when corroborated by credible, disinterested witnesses and when the prosecution's identification is questionable.
• Trial courts must weigh all evidence. The Supreme Court criticized the trial court for ignoring material inconsistencies and failing to summarize the testimonies of all witnesses, especially in capital cases.
• Reasonable doubt means acquittal. Where evidence admits of two interpretations — one of guilt and one of innocence — the accused must be given the benefit of the doubt.
• The presumption of innocence is a real protection. Even in serious crimes like highway robbery, the constitutional guarantee requires proof beyond moral certainty.

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