G.R. No. 136888 - Philippine Charter Insurance Corp. vs. Chemoil Lighterage Corp.

The case is an automatic review of the death sentence imposed on Mario Rabuya y Galleto by the Circuit Criminal Court of the Seventh Judicial District on March 6, 1969.
The conviction was for the crime of robbery with homicide and serious physical injuries, as charged in an amended information.

On November 6, 1968, during nighttime in Pasay City, a group of armed conspirators hijacked a Philippine Airlines flight (Flight 158 Romeo, PIC-536) traveling from Mactan, Cebu to Manila.
The accused, along with co-conspirators identified by multiple aliases (e.g., Ricardo Carralos aka Zaldy, Beneficio Chiong aka Shoppi, Felipe Sojian aka Loloy, among others), planned a robbery on the hijacked plane.
During the commission of the crime, the conspirators robbed passengers of jewelry and cash, with detailed amounts recovered from various victims, including amounts as high as over P100,000 from a deceased passenger, Vitaliano Pagaran.
The crime escalated with the use of lethal force: gunshots were fired resulting in the death of Vitaliano Pagaran and infliction of serious injuries on Florencio Villarin, an NBI agent who survived after being wounded.

During the trial on March 5, 1969, after the prosecution had presented its evidence including testimony from seven witnesses and while the state witness Ferdinand Camacho was being cross-examined, the accused stood up and expressed his intention to change his plea from not guilty to guilty.
With the assistance of his counsel, Atty. Antonio Rodriguez, and aided by an interpreter (NBI Agent Jesus Sagun), the accused was advised of the penalty of death or life imprisonment.
Although the accused expressed his desire for a life sentence based on his claim of no previous criminal record and repentance, the court made it clear that the penalty would be determined solely by law.

The evidence presented included the testimony of eight prosecution witnesses, material documentary evidence, and the statement of facts from the Solicitor General establishing the conspiracy.
Testimonies confirmed the active role of the accused, particularly noting that he was the only conspirator armed with a .45 caliber pistol while the others carried lighter weapons (.38 or .32 caliber).
In his own testimony (given after pleading guilty), the accused admitted to his participation, though later argued that his actions were taken under duress and out of fear after witnessing a companion being wounded.

On March 6, 1969, the trial court found the accused guilty beyond reasonable doubt and sentenced him to suffer the penalty of death.
The court also ordered the accused to indemnify the injured parties and the estate of the deceased with specified amounts.
The aggravating circumstances highlighted in the charge included:

Whether the change of plea from not guilty to guilty by Mario Rabuya was made voluntarily and with full awareness of its consequences, particularly given the circumstances during cross-examination and the involvement of an interpreter.

Whether the accused’s late plea of guilty, along with his claims of having yielded to arrest without resistance and his assertion of lacking a prior criminal record, should be regarded as mitigating circumstances.
Whether such mitigating factors can offset the clearly established aggravating circumstances inherent in the commission of the crime.

Whether the imposition of the death penalty is proper in light of the evidence which independently establishes the accused’s guilt and the aggravating circumstances present (nocturnity, use of a motor vehicle, and participation in a band).