Title
People vs. Tibon y Deiso
Case
G.R. No. 188320
Decision Date
Jun 29, 2010
A father, despondent over his wife's alleged affair, killed his two young sons in a fit of rage. Despite claiming insanity, he was convicted of parricide and sentenced to life imprisonment without parole.
A

Case Summary (G.R. No. 29947)

Charges and Informations

Two Informations charged Honorio Tibon with two counts of parricide for the stabbing deaths of his two legitimate sons on or about December 12, 1998 in Manila. Each Information alleged willful, unlawful, and felonious killing with intent to kill by repeated stab wounds to the chest.

Trial Proceedings and Evidentiary Summary

Tibon pleaded not guilty and stood trial. The prosecution presented SPO3 Jose M. Bagkus (WPD investigator), neighbor Francisco Abello Jr., Medico-Legal Officer Dr. Emmanuel Aranas (PNP Crime Laboratory), Gina Sumingit (common-law wife and mother of the victims), and Renato Tibon (brother). The accused testified as the sole defense witness. Documentary exhibits included autopsy findings and receipts for funeral expenses.

Facts Established at Trial

The parties lived together with Tibon’s extended family. Gina worked in Hong Kong, leaving the children in Tibon’s custody. Tibon allegedly learned of his wife’s alleged affair, thereafter drinking heavily and physically abusing the children. On the night in question, family members found the two children lifeless with wounds; upon being seen, Tibon stabbed himself in the chest and attempted to jump from a window. He sustained head injuries; siblings and neighbors rushed him and the children to hospital. The children died; Tibon was treated for his injuries and, while under police custody at hospital, was interviewed.

Medical and Forensic Findings

Dr. Aranas’ autopsy showed Reguel sustained multiple stab wounds (five wounds; four fatal) and abrasions consistent with facing the assailant; KenKen had three left-chest stab wounds that pierced the heart and left lung, causing death. Dr. Aranas remarked that the violent nature of the attacks on very young children suggested extreme anger on the part of the assailant.

Statements, Admissions and Family Testimony

While under treatment and after being informed of his rights, SPO3 Bagkus reported that Tibon voluntarily admitted despondency and confessed to stabbing the children. Tibon’s sister Leilani told the investigator that Tibon was responsible. Gina testified that Tibon confessed to her at the hospital and subsequently wrote a letter seeking forgiveness; she produced receipts totaling PhP173,000 for wake and funeral expenses and sought PhP500,000 as quantification of damages for the loss.

Defense: Insanity Claim and Denial of Recollection

Tibon denied the charges and asserted insanity as an exempting circumstance, claiming he could not recall the events of that night, including being taken to hospital. He relied on his testimony and medical records from the NCMH, arguing that his mental condition rendered the killings involuntary.

RTC Decision

The Regional Trial Court found the prosecution witnesses credible and Tibon’s testimony not worthy of belief. The RTC concluded that Tibon was in control of his faculties before, during, and after the attacks and rejected the insanity defense. The trial court convicted Tibon of two counts of parricide, sentenced him (each count) to death (the penalty in effect under the Revised Penal Code prior to RA 9346), and awarded civil indemnity of PhP75,000 to each heir.

Court of Appeals Ruling

The Court of Appeals affirmed the RTC’s factual findings, agreeing that the presumption of sanity was not overcome and that the defense failed to prove mental incapacity contemporaneous with the crimes. Because of RA 9346, the CA modified the penalty from death to reclusion perpetua without eligibility for parole and otherwise affirmed the conviction.

Issue on Appeal to the Supreme Court

The primary issue presented was whether the Court of Appeals erred in failing to recognize the exempting circumstance of insanity in favor of the accused-appellant.

Supreme Court’s Standard and Burden on Insanity Plea

The Supreme Court reiterated that insanity is an extraordinary defense and the accused bears the burden to establish it by clear and convincing evidence. The proof of insanity must demonstrate the defendant’s mental incapacity at the time immediately before or during the commission of the offense. The presumption under Civil Code Art. 800 is that every human is sane; the defense of insanity is in the nature of confession and avoidance and is strictly construed.

Analysis of Mental Health Records and Evidentiary Sufficiency

The Court found the NCMH records relied upon by Tibon concerned fitness to stand trial and did not address his mental state at the time of the offense. The Court emphasized controlling jurisprudence that post-offense evidence of insanity is persuasive only if accompanied by proof of abnormal behavior immediately before or simultaneous to the crime. Tibon’s alleged memory lapse and assertions of despondency were insufficient, and the Court treated such claims as possibly concocted attempts to evade responsibility. No competent medical testimony was adduced to establish total deprivation of intelligence at the relevant time.

Factual Finding on Voluntariness and Motive

The Court accepted the factual findings of the lower courts that Tibon acted out of jealous rage upon learning of his wife’s alleged infidelity. The Court distinguished extreme emotional disturbance (jealousy and rage) from legal insanity, observing that uncontrolled anger and despondency do not equate to complete deprivation of intelligence. The evidence supported voluntariness and intent, and ther

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