Title
People vs. Yabut
Case
G.R. No. 39085
Decision Date
Sep 27, 1933
Prisoner Antonio Yabut fatally attacked fellow inmate Sabas Aseo during a debt dispute in Bilibid Prison. Convicted of homicide, not murder, due to insufficient proof of treachery, Yabut received the maximum penalty under Article 160.
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Case Summary (A.C. No. 10294)

Charges and Information

The information charged Yabut with murder for having, on or about 1 August 1932, while a prisoner serving sentence at Bilibid Prison, intentionally and treacherously assaulted and struck fellow prisoner Sabas Aseo from behind with a wooden club, fracturing his skull and causing injuries that resulted in death approximately twenty-four hours later. The information also alleged that Yabut was a recidivist, having two prior homicide convictions and one for serious physical injuries.

Facts Found by the Trial Court

The trial court found—and the Supreme Court accepted upon independent review—that, on the night of 1 August 1932 within Brigade 8-A, a confrontation occurred among prisoners. The chief baton-holder Villafuerte observed Yabut approach and strike the deceased (who was turned away) first in the nape and then in the head with a wooden club (exhibit C). The victim fell and later died. Villafuerte attempted to interpose; a struggle ensued between Yabut and Villafuerte during which Yabut threatened Villafuerte and sought to use his weapon. After a scuffle Yabut hid in the brigade latrine and was immediately apprehended by prison authorities. The court rejected Yabut’s testimony that Villafuerte, not he, delivered the fatal blow.

Eyewitness and Medical Evidence

Four eyewitnesses placed the fatal blows as being struck from behind by Yabut. Medical testimony from Santiago Estrada (resident physician, Bureau of Prisons) and Dr. Pablo Anzures (Medico-Legal Department, University of the Philippines) established that death was caused by subdural and cerebral hemorrhages following a skull fracture produced by the blow to the head. These medical findings corroborated eyewitness accounts of a blow to the head from behind.

Appellant’s Assignments of Error

On appeal Yabut urged (1) that the trial court erred in applying Article 160 of the Revised Penal Code; (2) that the court erred in finding the defense evidence contradictory and uncorroborated; (3) that the court erred in concluding that treachery (alevosía) was present; and (4) that the court erred in finding guilt for murder beyond reasonable doubt.

Statutory Framework — Article 160 and Its Interpretation

Article 160 of the Revised Penal Code (Spanish text and English translation provided in the decision) prescribes that a person who commits a felony after having been convicted by final judgment, before beginning to serve that sentence or while serving it, shall be punished by the maximum period of the penalty prescribed for the new felony; it also contains a provision on pardon at age seventy for certain convicts who are not habitual criminals. The appellant argued that the word “another” in the English caption of Article 160 limited application to cases where the new crime is different from the offense for which the convict was serving sentence. The Court rejected that argument: it held that no such limitation appears in the unambiguous text of Article 160 and that epigraphs or headings are mere catchwords or index aids which cannot modify or limit the clear words of the statute. The Court applied the general principle that when statutory text is clear, reliance on section headings is improper; secondary aids may be used only to remove, not create, doubt.

Findings on Treachery (Alevosía) and Standard of Review

The Supreme Court, after independent review of the record, found the trial court’s factual findings amply supported by the evidence beyond reasonable doubt except as to the existence of treachery (alevosía). Some members of the Court entertained reasonable doubt that treachery had been established. Because treachery was not unanimously sustained, the aggravating circumstance underlying

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