G.R. No. L-72670 September 12, 1986
SATURNINA GALMAN, ET AL., petitioners, vs. SANDIGANBAYAN, ET AL., respondents.

FACTS

This case arose from the assassination of former Senator Benigno “Ninoy” Aquino, Jr. upon his return to the Philippines on August 21, 1983. The military’s initial version claimed Aquino was killed by a lone communist gunman, Rolando Galman, who was subsequently shot by security forces. Public outrage led to the creation of a Fact-Finding Board, which, after extensive investigation, submitted majority and minority reports in October 1984. The minority report, authored solely by the Board’s chairman, was preferentially accepted by then-President Ferdinand Marcos and referred to the Tanodbayan (Ombudsman) for prosecution. Consequently, several military personnel, including General Fabian Ver, were charged before the Sandiganbayan.
The Sandiganbayan trial proceeded, but petitioners alleged it was a sham. They contended the prosecution suppressed vital evidence, including the majority board report and key witness testimonies, while the court itself demonstrated bias by consistently ruling in favor of the defense and appearing to have prejudged the case. The Sandiganbayan ultimately acquitted all accused. Petitioners then filed this special civil action for certiorari, seeking to annul the acquittal and order a new trial, arguing the proceedings were a mistrial due to denial of due process.

ISSUE

The core issue is whether the acquittal rendered by the Sandiganbayan is valid and constitutes a proper basis for a claim of double jeopardy, or whether the proceedings were so vitiated by denial of due process as to be void, thus allowing a retrial without violating the constitutional right against double jeopardy.

RULING

The Supreme Court granted the petition, set aside the Sandiganbayan’s acquittal, and ordered a new trial. The Court held that the constitutional right against double jeopardy protects an accused from being tried twice for the same offense after a valid acquittal or conviction. However, this protection presupposes a fair and valid trial. The Court found the proceedings before the Sandiganbayan were a “moro-moro” or sham, amounting to a failure of trial.
The legal logic is that when a trial is devoid of the essential elements of due process, such as an impartial tribunal and a meaningful opportunity to present evidence, the resulting judgment is void. The Court detailed how the Sandiganbayan exhibited bias through its procedural rulings and how the prosecution, acting under the influence of the then-administration, deliberately withheld crucial evidence favorable to the state’s case. This collusive suppression of evidence and the court’s partiality deprived the state of its day in court, making the acquittal a product of a mock trial. Consequently, since there was no valid trial to begin with, the defense of double jeopardy cannot be invoked. A retrial is mandated to serve the ends of justice and ascertain the truth behind the assassination, ensuring it is conducted before an impartial tribunal with a fair and complete presentation of evidence.