Eyewitness Credibility: When Testimonial Inconsistencies Do Not Destroy a Homicide Conviction

The Supreme Court has long held that minor inconsistencies in eyewitness testimony do not automatically destroy a witness's credibility. In Kummer v. People (G.R. No. 174461, September 11, 2013), the Court affirmed this principle, ruling that slight contradictions between a witness's affidavit and court testimony may even strengthen credibility by showing the testimony was not rehearsed. The case also clarified important rules on motive, public documents, and amendments to criminal informations.

The Facts of the Case

On the evening of June 19, 1988, Jesus Mallo, Jr. went to the house of Leticia Kummer, accompanied by Amiel Malana. Mallo knocked on the door and identified himself. When Kummer opened the door, her son Johan shot Mallo twice. As Malana ran away, he saw Kummer fire a long gun at Mallo, hitting him in the back. Kummer and Johan then dragged Mallo's body away from the house.

The prosecution charged both Kummer and Johan with homicide. Two eyewitnesses—Malana and Ramon Cuntapay—testified that they saw Kummer shoot the victim. The trial court convicted both accused, relying on the eyewitness testimonies, corroborated by positive paraffin test results showing gunpowder nitrates on Kummer's right hand.

The Issue on Appeal

Kummer appealed, arguing that the eyewitness testimonies were inconsistent with the witnesses' sworn affidavits. She pointed to discrepancies: the affidavits stated the witnesses only heard gunshots, while their court testimonies claimed they saw the shooting. She also argued that the prosecution failed to prove motive, that the judge who penned the decision did not hear the testimonies, and that the paraffin test report should not have been admitted.

The Supreme Court's Ruling

The Court rejected all of Kummer's arguments and affirmed her conviction.

On testimonial inconsistencies. The Court ruled that inconsistencies between a witness's affidavit and open court testimony, when referring only to minor and collateral matters, do not affect credibility. Affidavits are often abbreviated and incomplete. As between an affidavit and testimony given in court, the latter prevails because affidavits taken ex parte are generally inferior to court testimony. The critical point was that both witnesses positively and firmly identified Kummer as one of the assailants.

On motive. The prosecution does not need to prove motive when the accused has been positively identified by an eyewitness. Motive only becomes important when the identity of the assailant is in doubt.

On the judge who penned the decision. A judgment is not erroneous solely because the judge who heard the case was not the same judge who rendered the decision. The deciding judge may rely on the transcribed stenographic notes taken during trial.

On the paraffin test report. The chemistry report is a public document under Section 19, Rule 132 of the Rules of Court. Public documents are admissible without further proof of due execution and authenticity, and entries in public records are prima facie evidence of the facts stated therein.

On the amended information. A change in the date of the crime from July 19 to June 19, 1988—a difference of only one month—is a formal amendment that does not require a new arraignment. The amendment did not change the nature of the offense or prejudice the accused's rights.

Practical Takeaways

• Minor inconsistencies strengthen, not weaken, eyewitness testimony. Courts view slight contradictions as badges of truth, showing the testimony was not rehearsed.
• Affidavits are inferior to open court testimony. Ex parte affidavits are often incomplete; testimony given in court prevails.
• Motive need not be proven when there is positive identification. The prosecution's burden is met by credible eyewitness identification.
• Public documents, including paraffin test reports, are admissible without the author's testimony. The presumption of regularity in official duties applies.
• Formal amendments to an information do not require a new arraignment. Changes that do not alter the nature of the offense or prejudice the accused are merely formal.

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