Right to Present Evidence: Examining Forged Signatures in Graft Cases

The right of an accused to present evidence is among the most vital guarantees in criminal proceedings. In Marquez v. Sandiganbayan (G.R. Nos. 187912-14, January 31, 2011), the Supreme Court clarified that a trial court commits grave abuse of discretion when it denies an accused the opportunity to have questioned signatures examined by experts, even if the prosecution's evidence has already been formally offered and admitted.

The Facts of the Case

Joey P. Marquez, then City Mayor of Parañaque and Chairman of the Bids and Awards Committee, was charged with violation of Section 3(e) of Republic Act No. 3019 (the Anti-Graft and Corrupt Practices Act). The charges arose from the procurement of thousands of rounds of overpriced bullets from VMY Trading, a company not registered as an arms dealer with the Philippine National Police or the Department of Trade and Industry.

During trial before the Sandiganbayan, the prosecution presented its witnesses and documentary evidence, including disbursement vouchers, purchase requests, and authorization requests. These exhibits were formally offered in January 2006 and admitted by the court in March 2006.

Marquez's defense was that his signatures on these documents were forged. As early as November 2003, even before arraignment, he had sought referral of the documents to the National Bureau of Investigation (NBI) for examination. The Office of the Special Prosecutor denied this request. He renewed the plea in an Omnibus Motion in April 2008, but it was not acted upon.

After the case was raffled to the Sandiganbayan's Fifth Division, Marquez filed another motion to refer the prosecution's evidence to the NBI's Questioned Documents Section. The anti-graft court denied the motion, ruling that while expert opinion would be helpful, it was neither mandatory nor indispensable since the court could determine forgery from its own independent examination of the documents.

The Issue

The central question was whether the Sandiganbayan committed grave abuse of discretion in denying Marquez's motion to have the prosecution's documentary evidence examined by the NBI, thereby violating his right to present evidence and due process.

The Supreme Court's Ruling

The Supreme Court granted the petition and reversed the Sandiganbayan's resolutions. The Court held that the accused was denied the reasonable opportunity to present his defense, which amounts to a denial of due process.

The Court emphasized that forgery cannot be presumed and must be proved by clear, positive, and convincing evidence. The burden of proof lies on the party alleging forgery. Thus, Marquez needed the opportunity to present evidence supporting his claim. Without a referral to the NBI, his only evidence would be negative testimonial evidence, which is generally considered weak.

The Court noted that the documents were in the control of the prosecution or the court, so Marquez could not independently obtain examination results. Any NBI finding would not be binding on the court—it would still be subject to the court's scrutiny under Section 22, Rule 132 of the Rules of Court. Nevertheless, the accused should not be deprived of the right to present evidence of his own choice.

Key Principles Established

First, the court's discretion to determine forgery from its own examination can only be exercised after evidence is submitted and admitted. Evidence cannot be properly weighed if not exhibited or produced before the court.

Second, the fact that documentary exhibits were already formally offered and admitted does not preclude examination of the signatures by the defense. With proper handling by court personnel, this can be accomplished by NBI examiners.

Third, the accused's failure to raise forgery earlier—such as during a COA audit—is immaterial. While it may affect the weight of the defense, it should not bar the accused from insisting on it during trial.

Fourth, a request for expert examination is not necessarily a delaying tactic. In this case, Marquez had sought the referral as early as 2003, well before trial progressed.

Practical Takeaways

• Forgery must be proved. An accused claiming forged signatures bears the burden of presenting clear, positive, and convincing evidence. Negative testimony alone is generally weak.
• Expert examination is a right, not a privilege. Courts should allow the accused to have questioned documents examined by experts like the NBI, even after the prosecution's evidence has been formally offered.
• Timing matters, but delays are not fatal. Raising the forgery defense late may weaken its weight, but it does not automatically bar the accused from presenting it.
• Trial courts must balance due process and speedy trial. Discretion in managing proceedings must be exercised judiciously, bearing in mind the interests of substantial justice.
• Certiorari is available for grave abuse. A court's refusal to allow the accused to present evidence of his choice can amount to grave abuse of discretion warranting Supreme Court intervention.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.