Title
People vs. Dungo
Case
G.R. No. 89420
Decision Date
Jul 31, 1991
Rosalino Dungo stabbed Belen Sigua at a DAR office, claiming insanity. Courts rejected his defense, citing his deliberate actions, and upheld his murder conviction.
A

Case Summary (G.R. No. 56965)

Factual Background

On March 16, 1987, between two and three o’clock in the afternoon, a male person identified as the accused entered the Department of Agrarian Reform field office in Apalit, Pampanga, where Mrs. Belen Macalino Sigua was attending to office work, drew a knife from an envelope he carried, and stabbed her repeatedly. The assailant left the office with blood-stained clothes and a bloodied weapon. The victim sustained fourteen wounds, five of which were fatal according to the autopsy report. The prosecution established these facts through eyewitness testimony and medical evidence.

Information and Plea

On March 24, 1987, the provincial prosecuting attorney filed an information charging Rosalino Dungo with murder alleging that the killing was committed with deliberate intent to kill by means of treachery and with evident premeditation, and alleging alevosia, evident premeditation, and disrespect toward her sex among the qualifying and aggravating circumstances. On arraignment, the accused pleaded not guilty.

Trial Court Proceedings and Judgment

Trial on the merits proceeded. The trial court found the accused guilty beyond reasonable doubt as principal in the crime of murder. On January 20, 1989, it sentenced the accused to reclusion perpetua with legal accessories and ordered indemnity to the victim’s family of P75,000.00 as actual damages, P20,000.00 as exemplary damages, and P30,000.00 as moral damages. The trial court specifically found the accused sane at the time of the offense, relying on the concealment of the weapon, the deliberate manner of the attack, and the accused’s flight and arrest in Metro Manila as indicia of consciousness and knowledge of his acts.

Defense Evidence and Theory of Insanity

The accused interposed insanity as a defense. The defense presented lay testimony from the accused’s wife, Andrea Dungo, who described behavioral changes preceding the killing, including preoccupation, irritability, sensory complaints, and aberrant conduct. The defense also presented expert testimony from Dra. Sylvia Santiago and Dr. Nicanor Echavez of the National Center for Mental Health, who reported that the accused was psychotic or insane before, during, and after the offense and diagnosed an organic mental disorder secondary to cerebrovascular accident. They described impaired judgment, impulse control, memory disturbance, disorientation, and auditory hallucinations, and testified that the psychosis was permanent in organic origin though its manifestations might respond to medication. The accused himself testified and denied awareness of the stabbing.

Prosecution Rebuttal Evidence

The prosecution produced medical witnesses who had previously treated the accused. Dr. Vicente Balatbat and Dr. Ricardo Lim testified that the accused suffered ailments secondary to a stroke and an occlusive disease of the brain resulting in left-side weakness, but that he had shown some rehabilitation after treatment. Dr. Leonardo Bascara testified to the accused’s low level of intelligence. The prosecution relied on earlier lay testimony that the accused had confronted the victim’s husband in late February 1987 regarding administrative requirements, which demonstrated purposeful, directed conduct preceding the offense.

Issue on Review

The pivotal issue on automatic review was whether the accused was insane at the time of the commission of the crime so as to relieve him of criminal responsibility. The Court noted that the burden to prove insanity rested on the defense and that the quantum required to overcome the presumption of sanity is proof beyond reasonable doubt.

Legal Basis and Reasoning

The Court reviewed legal principles on insanity. It invoked the test that insanity must be such as to show a deprivation of intelligence, an absence of cognition, or a destruction of free will as stated in prior authorities such as People v. Puno, and applied the definition in Section 1039, Revised Administrative Code, which characterizes insanity as a manifestation of disease or defect of the brain producing perversion or disordered function of intellectual or volitional faculties. The Court explained that proof of insanity may rest on surrounding circumstances, conduct inconsistent with prior character, irrational acts and beliefs, and that evidence may encompass a reasonable period before and after the act in question. The Court emphasized that direct testimony of specific acts of derangement is not essential.

The Court then weighed the evidence. It found the defense experts’ diagnosis of organic psychosis and their opinion that the mental defect was permanent, but it also considered testimony that the accused had confronted the victim’s husband weeks before the killing and that the accused concealed the weapon and fled after the crime. The Court cited Dr. Echavez’s testimony that the accused could exhibit periods of awareness and that his shouting admissions and his behavior when requesting postponement of proceedings indicated awareness. The Court concluded that the trial court, which observed witness demeanor, reas

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