DNA Profile Must Be Supported By Other Conclusive Evidence To Prove Guilt: Supreme Court

"The DNA profile obtained from exhibits... completely matches with the DNA profile obtained from [the scene of crime." Supreme Court of India, in a judgment dated October 01, 2026, held that a DNA match alone, without a complete, unbroken chain of circumstantial evidence, is insufficient to secure a conviction in a criminal trial.

Dealing with an appeal against an acquittal, a bench of Justice Manoj Misra and Justice Vijay Bishnoi emphasized that the presence of an accused's DNA at a crime scene indicates only that the individual was there at some point, not necessarily at the time of the offense. The Court observed that in cases of circumstantial evidence, it is imperative for the prosecution to establish a chain so complete that it excludes every hypothesis of innocence.

Prosecution Failed To Link Accused To Time Of Crime

The case involved the death of a woman and her minor son by strangulation. The prosecution heavily relied on the theory that the accused, a step-daughter, murdered the victims to claim property. To sustain the conviction, the prosecution presented a "last seen" theory, recovery of keys via a disclosure statement, and a DNA match between the accused's blood and samples found at the scene. However, the bench noted that the prosecution’s theory regarding the timing of the death was not conclusively proven, as medical evidence did not rule out a timeline occurring after the accused had allegedly left the vicinity.

Investigational Lapses Dent Credibility Of Evidence

The Court expressed deep concern over significant lapses in the investigation. Specifically, the Investigating Officer failed to collect and exhibit Call Detail Records (CDR) with tower locations for the mobiles of the deceased and the accused. The bench remarked that such data would have been critical in determining if the mobiles were in close proximity at the time of the alleged incident. By suppressing or failing to produce this "vital information," the investigation failed to elevate the case from the level of suspicion to the level of proof required in a capital offense.

No Absolute Reliance On DNA Evidence In Isolation

Regarding the DNA matching, the Court acknowledged the forensic report but limited its legal weight. The bench observed that since the accused was a frequent visitor to the house, the presence of her blood could be attributed to past visits. Critically, the prosecution failed to find the accused's blood on the clothes of the deceased or on the materials used for strangulation. The Court stated that forensic evidence of this nature must be viewed in the context of the entire factual matrix and cannot serve as the sole basis for conviction when the prosecution’s own witnesses regarding the "last seen" circumstance were found to be untrustworthy.

Witness Testimonies Found Contrived

The Court discarded the testimonies of key prosecution witnesses, including a taxi driver and a hotel worker, labeling them as "witnesses set up to create evidence." The bench highlighted that these witnesses could not explain why they approached the police only days after the incident, and noted the absence of records—such as a hotel guest register—to corroborate their statements. The Court found these testimonies to be an improvement upon previous versions, further undermining the prosecution's claim that the accused was present at the residence on the night of the crime.

Absence Of Proved Motive In Circumstantial Cases

While the law does not strictly require the establishment of motive in every criminal case, the Court held that in a case resting entirely on circumstantial evidence, the absence of a proven motive becomes a significant ground for granting the benefit of doubt. Here, the prosecution failed to provide evidence of any specific bequest of property in favor of the minor son, which was the alleged motive for the crime. Given that the father had five daughters, the court reasoned that the accused would not be the sole beneficiary of the victim's removal, further weakening the prosecution's theory.

Ultimately, the Court concluded that the prosecution failed to establish a chain of circumstances that unerringly pointed to the guilt of the accused. Finding no perversity in the High Court’s acquittal, the Supreme Court dismissed the appeal, holding that the "prosecution had failed to bring home the charge against the accused." The verdict reaffirms that judicial standards for circumstantial evidence must remain stringent to prevent a miscarriage of justice.

Date of Decision: 01 October 2026