G.R. No. 29481 - People vs. Bayambao

Case Summary (G.R. No. 29481)

Petitioner and Respondent

Petitioner (appellant on appeal): Pambaya Bayambao. Respondent (appellee): The People of the Philippine Islands.

Key Dates and Procedural Posture

The trial court convicted Bayambao of murder and sentenced him to twenty years cadena temporal, legal accessories, costs, and indemnity. The case was appealed to the Supreme Court, which reviewed the evidence, credibility of witnesses, and applicable penal provisions.

Applicable Law and Constitutional Framework

The Supreme Court’s analysis relied on the Penal Code provision expressly cited in the decision: article 8, No. 10 (exemption from criminal liability when the actor acts under a mistake of fact or in impulse of uncontrollable fear of an equal or greater injury). The decision was rendered in 1928 and therefore applies the legal framework and Penal Code provisions in force at that time as those provisions are invoked in the opinion.

Factual Narrative Offered by the Accused

Bayambao admitted he fired the shot that killed the victim but asserted he acted under a reasonable mistake of fact. He testified that, after his wife reported someone had thrown a stone at their house, he took his revolver and flashlight, went beneath the house, heard a noise and saw a dark figure rush at him with uplifted hands as if to strike; in fear he fired, believing the figure was an outlaw armed with a kampilan or dagger. He immediately called for light, and when the victim and others came, he embraced the wounded man, asked forgiveness, and sought medical help and reported the incident to the local commanding officer.

Factual Narrative Offered by the Prosecution Witness

The widow of the deceased (Morid) testified differently: she said the accused had summoned the deceased to check who was throwing stones, then the accused returned with a revolver and flashlight, focused the light on the deceased and fired. Her testimony alleged a deliberate shooting and subsequent threats to her. This testimony was uncorroborated and contradicted by the accused and his wife.

Evidentiary Issues — Ante‑mortem Statement (Exhibit B)

The prosecution offered an ante‑mortem statement (Exhibit B) allegedly made by the deceased. The Court found substantial doubts about its authenticity and admissibility: the constabulary lieutenant who arrived earlier testified that the deceased could no longer speak, the document was written by a third person (Urunaga) on a typewriter, and there was no proof the deceased read or acknowledged it. The Court relied on precedent (People v. Dizon) in requiring proof of identity and voluntariness for admissibility; consequently Exhibit B was given no probative value.

Credibility and Corroboration Analysis

The Court carefully compared testimonies. It found Morid’s account uncorroborated, partially incongruous, and inconsistent with surrounding circumstances (no proven prior dispute, evidence that the parties had been living peacefully and had slept in the same house shortly before the event). Conversely, Bayambao’s account was supported by his wife’s testimony and corroborated in material respects by Lieutenant Cramer and Sergeant Tumindog, who attested that Bayambao promptly notified the commanding officer and sought medical aid. The Court considered the naturalness of Bayambao’s conduct after the shooting (embracing the victim, asking forgiveness, seeking help) as lending credibility to his claim of genuine mistake and lack of malicious intent.

Legal Reasoning — Mistake of Fact and Exemption from Liability

Applying article 8, No. 10 of the Penal Code, the Court held that Bayambao acted under an honest and reasonable mistake of fact (he believed an imminent attack by an outlaw was occurring). The Court treated this as an impulse produced by uncontrollable fear of an injury at least equal in gravity to that feared, which, under the cited penal provision, exempts the actor from criminal liability. The Court further found that the mistake was not caused by negligence or bad faith; because the error of fact was not due to culpable carelessness, it rebutted the presumption of ma

Case Syllabus (G.R. No. 29481)

Facts of the Case

Pambaya Bayambao was charged with murder for causing the death of Mangutara and was tried before the Court of First Instance of Lanao.
The trial court found the defendant guilty and sentenced him to twenty years cadena temporal, the accessories of law, costs, and ordered him to indemnify the heirs of the deceased in the sum of P1,000.
The defendant did not deny causing the death; he asserted that he acted by mistake, believing the deceased to be a malefactor who attacked him in the dark.
The defendant described the circumstances: while his wife was cooking she cried that “someone has thrown a stone at the house”; the defendant took his revolver, went under the house, looked around but did not go far because he was alone; near the staircase, as he was about to ascend, he heard a noise and saw “a black figure” rush at him with hands uplifted as if to strike him; frightened, he fired.
The defendant stated he did not shout before shooting because he had no time; the figure was very near with uplifted arms behind a pillar and he feared being attacked with a kampilan or dagger.
After firing, the defendant waited briefly to see if there were other companions, then called out for his brother-in-law “Imo” to bring a light; Imo and Morid came and they discovered the wounded man was the defendant’s brother-in-law; the defendant embraced and begged forgiveness, and the wounded man said he had also thought the defendant was an outlaw.
The deceased’s wife (Morid) gave a different account: she testified that the accused’s wife informed her husband that someone had thrown a stone; the accused suggested the deceased go down to see; the deceased went down and said there was nobody; the accused then went down carrying an automatic revolver in his right hand and a flashlight in his left; the accused asked the deceased if the hens there belonged to him and, when the deceased asked the accused to focus his light to gather the hens, the accused shot the deceased; Morid said she saw the accused focusing his flashlight on her husband and then firing again; the deceased told Pambaya he was wounded; Morid reproached the accused and the accused told her to shut up or he would shoot her also.
Morid was the only witness to those specific facts; her testimony was uncorroborated.

Procedural History

Initial prosecution: Defendant charged with murder; convicted by the Court of First Instance of Lanao and sentenced as above.
Appeal: The case reached the Supreme Court on appeal (G.R. No. 29481).
Supreme Court disposition: The appealed judgment was reversed; the appellant was acquitted and the Court ordered costs de officio and other favorable pronouncements.

Testimony and Evidentiary Materials

Defendant’s sworn narrative is transcribed in the record (pages 33–34, transcript).
Testimony supporting the defendant’s account included that of his wife and, on certain points, Lieutenant Cramer and Sergeant Tumindog — specifically that the accused immediately went to the commanding officer after the occurrence to report and to ask for prompt medical aid for the victim.
Morid (the deceased’s widow) testified to facts that directly contradicted the defendant and his wife; her testimony was uncorroborated and contained incongruous parts.
Exhibit B: an alleged ante-mortem declaration purportedly by the deceased, prepared by Urunaga on a typewriter and introduced in evidence.
The justice of the peace and the witness Urunaga stated such a statement was made by the deceased, but Constabulary Lieutenant Cramer, who arrived at the scene a few moments before the justice of the peace, positively stated the deceased could no longer speak; accordingly, Cramer’s testimony contradicts the possibility that the deceased made the alleged statement.
It was not demonstrated that the dece