DNA Evidence Requires a Proved Chain of Custody; “Last Seen” and Extra‑Judicial Confession Cannot Substitute a Complete Circumstantial Chain (Acquittal in a Death Reference)

1. Introduction

This decision arose from a death reference and connected appeals challenging a Sessions Court judgment (29.04.2022) that had convicted three accused—A-1 Gopi @ Bhalabhai Devipujak, A-2 Jayantibhai Vadi, and A-3 Lalabhai Vadi—for kidnapping, gang rape, murder, and causing disappearance of evidence in relation to the death of a married woman (“X”). The trial court awarded death sentence under Section 302 r/w 114 IPC along with other sentences under Sections 201, 366, and 376(D) IPC.

The prosecution case was entirely circumstantial. Key links asserted were: (i) “last seen together” evidence; (ii) alleged extra‑judicial confession by A‑1; (iii) “medical history” recorded by a doctor after arrest; (iv) a DNA profiling report; and (v) alleged disclosure/pointing out of places during investigation.

The Gujarat High Court’s core task was to decide whether these circumstances formed a complete, unbroken chain proving guilt beyond reasonable doubt—particularly critical in a death reference.

2. Summary of the Judgment

The High Court allowed both criminal appeals, set aside the conviction and death sentence, and acquitted all three accused of all charges. Consequently, the Criminal Confirmation Case (death reference) was disposed of, and the accused were directed to be released unless required in any other case.

Prosecution Circumstance	High Court Finding
“Last seen together” (PW-15; PW-16)	Not proved reliably; contradictions and absence of TIP; treated as weak evidence incapable of sustaining conviction.
Extra-judicial confession (PW-13; PW-14)	Did not inspire confidence; lacked particulars; insufficient corroboration; unsafe to rely upon.
Medical “history” recorded post-arrest (PW-2)	Not admissible/reliable for proving occurrence; confession-like statements in police presence hit by Sections 25–26 Evidence Act.
DNA profiling (Exh.86)	Chain of custody and preservation not proved; 14-day unexplained delay; link evidence missing; report could not be relied upon.
Disclosure/pointing out & reconstruction panchnama	Section 27 requirements not met; fact allegedly “discovered” already known; exact words/contents not proved as per law.

3. Analysis

3.1 Precedents Cited and Their Influence

A. Circumstantial evidence: the “complete chain” rule

The Court anchored its approach in Sharad Birdhi Chand Sarda Vs. State of Mahahrashtra - AIR 1984 SC 1622, reiterating that each circumstance must be fully proved and, cumulatively, must form a chain that excludes every hypothesis except guilt. This case provided the controlling framework: once key links (last seen, confession, DNA, discovery) were found unreliable, the chain snapped.

B. “Last seen together” is weak unless the time-gap is tight and the chain is otherwise complete

Relying on Kanhaiya Lal Vs. State of Rajasthan (2004 (4) SCC 715) and Rambrakash @ Jalim Vs. State of Chhattisgarh (2016 (12) SCC 251), the Court treated last-seen evidence as insufficient by itself. The judgment also reproduced principles from Krishnan v.State of T.N. (2014) 12 SCC 279, including citations to Arjun Marik v. State of Bihar (1994) Supp (2) SCC 372, Bodhraj v. State of J&K (2002) 8 SCC 45 and Jaswant Gir v. State Of Punjab . (2005) 12 SCC 438.

Applying these, the High Court rejected the prosecution’s “last seen” reliance on PW-15 (shopkeeper) and PW-16 (tractor driver): PW-15 admitted police “showing” the accused; there was no TIP; and his earlier statement spoke of rush and lack of knowledge. PW-16’s account conflicted with other prosecution material (including PW-13’s Section 164 statement), undermining reliability.

C. Medical history: doctor is not a witness of occurrence; confession-like history in police presence is problematic

The Court invoked Pattipati Venkaih v. State of A.P. (1985 (4) SCC 80) to emphasise that the doctor’s role is medical; the doctor is not meant to become a witness of the occurrence. On facts, the Court treated “history” recorded when the accused were brought with police yadi and accompanied by police as not a safe/legally acceptable incriminating circumstance, additionally noting the bar on police-custody confessions under Sections 25–26 of the Evidence Act.

D. Extra-judicial confession: admissible but inherently weak; must be voluntary, true, and confidence-inspiring

The Court conducted a detailed cautionary review using Ramu Appa Mahapatar Vs. State of Maharashtra (2025 (2) SCR 388), which itself synthesised the law from State Of Rajasthan v. Raja Ram . : (2003) 8 SCC 180, Sansar Chand v. State of Rajasthan (2010) 10 SCC 604 and Sahadevan v. State of Tamil Nadu (2012) 6 SCC 403.

On that yardstick, A‑1’s alleged one-line admission (“I have killed my aunt”) to PW‑13 was found lacking in particulars (how/where/when), and insufficiently corroborated. The Court therefore refused to treat it as a dependable link in a capital case.

E. DNA evidence: probative, but only if collection, sealing, preservation, and chain of custody are proved

The Court accepted that DNA evidence is opinion evidence under Section 45 and referred to Rahul Vs. State of Delhi(2023) 1 SCC 883) for the principle that improper documentation/collection/packaging/preservation undermines admissibility and reliability.

It then relied on more recent Supreme Court authorities emphasising link evidence and chain of custody: Karandeep Sharma @ Razia @ Raju v. State of Gujarat (2025 INSC 444), Putai v. State of Uttar Pradesh (2025) INSC 1042, and Prakash Nishad v. State of Maharashtra (2023 16 SCC 357). Most notably, it quoted and adopted the procedural directions from Kattavellai @ Devakar Vs. State of Tamil Nadu (2025 INSC 845), including the expectation that DNA samples reach the lab with dispatch (the judgment notes “in any case not later than 48-hours”) and that a chain-of-custody register be maintained.

On facts, the DNA samples were forwarded with an unexplained delay (the Court noted receipt by FSL on 15.11.2018, i.e., about 14 days after collection from the accused), the “carrier/link” witnesses were not examined, and preservation safeguards were not proved. The Court therefore discarded Exh.86 as a reliable incriminating circumstance.

F. Discovery evidence: exact words and content must be proved; Section 27 cannot be used for already-known facts

The Court relied on Ramanand @ Nandlal Bharti v. State of Uttar Pradesh, 2022 SCC on-line 1396 to hold that the investigating officer must prove the contents of discovery and the exact words attributed to the accused.

Additionally, the Court reasoned that because the scene of offence was already panchnama’d on 29.10.2018, later “reconstruction/pointing out” did not qualify as discovery of a new fact “distinctly” within Section 27. Hence, it could not be used as an incriminating link.

G. Gravity cannot substitute proof

To reinforce that even heinous crimes require strict proof, the Court cited Jaharlaldas v. State of Orissa (1991 3 SCC 27) and, illustratively, Surendra Koli vs. State of U.P. (2025 LawSuit SC 1479), underscoring that courts cannot convict on conjecture, however grave the suspicion.

3.2 Legal Reasoning (How the Court Reached Acquittal)

1. Homicidal death was proved—but identity/participation was not. The Court accepted medical proof of throttling and injuries consistent with sexual assault. However, it separated “crime occurred” from “accused are perpetrators,” insisting the latter requires a complete circumstantial chain.
2. “Last seen” failed as a foundational link. PW-15’s identification was tainted by police suggestion and lack of TIP; PW-16’s narrative conflicted with other prosecution material. Without reliable last-seen evidence, the initial connective tissue between accused and deceased at relevant times was missing.
3. Medical “history” was not treated as admissible proof of occurrence. The Court treated the post-arrest history recorded in police accompaniment as unsafe and legally infirm for proving confession-like facts, and emphasised the limited evidentiary function of medical testimony in this context.
4. Extra-judicial confession was found too vague and uncorroborated. The Court viewed the alleged confession as lacking detail and reliability, and therefore insufficient as a decisive link—especially in a case resting wholly on circumstantial evidence.
5. DNA report could not be used because chain of custody was not proved. The unexplained delay and absence of link evidence meant contamination/tampering could not be ruled out; therefore, even a seemingly incriminating scientific report could not be safely acted upon.
6. Section 27 discovery was not established. The prosecution did not prove the legally required “discovery” attributes (exact words, new fact distinctly discovered), and the “pointing out” was largely of previously known locations.

Resulting principle applied: where multiple “weak” circumstances (last seen; extra-judicial confession) are themselves doubtful, and “stronger” forensic proof (DNA) is procedurally compromised, the court must acquit because the circumstantial chain is incomplete.

3.3 Impact on Future Cases

• Operationalising DNA chain-of-custody discipline: The judgment signals that courts in Gujarat will scrutinise DNA evidence for strict compliance with collection, sealing, storage, transport, and link-witness examination—mirroring the Supreme Court’s approach in Kattavellai @ Devakar Vs. State of Tamil Nadu (2025 INSC 845). Unexplained delays and missing “carrier” evidence can be fatal.
• Limits of “last seen” without TIP and without tight timelines: Police-showing and dock identification without TIP (especially where witnesses did not know the accused earlier) is treated with suspicion. Investigations may need to institutionalise TIP where identity is disputed.
• Caution with extra-judicial confessions: Courts will demand specificity and corroboration; one-line admissions without surrounding details may not pass the “confidence” test.
• Discovery evidence must be proved with precision: Investigators will need to ensure discovery panchnamas record and officers later prove the exact words and the “distinct” newly discovered fact, or risk exclusion under Ramanand @ Nandlal Bharti v. State of Uttar Pradesh, 2022 SCC on-line 1396.
• Death penalty cases: heightened insistence on proof. Although the judgment does not reach “rarest of rare” analysis after acquittal, its reasoning reinforces that in a death reference the evidentiary bar is functionally unforgiving: procedural lapses in key links can collapse the prosecution.

4. Complex Concepts Simplified

• Circumstantial evidence “chain”: The prosecution must prove a series of facts (links). If any essential link is not proved, the chain breaks, and guilt cannot be inferred.
• “Last seen together” theory: If the accused was the last person seen with the deceased shortly before death, and the time gap is so small that no one else could have intervened, it may support guilt—but it is generally considered weak unless supported by other strong evidence.
• Extra-judicial confession: A confession made to a private person (not a magistrate/court). Courts treat it cautiously because it can be fabricated or misunderstood; it must appear voluntary, truthful, and credible, and usually needs corroboration.
• DNA profiling evidence: DNA can strongly suggest biological contact, but only if the prosecution proves the sample was collected, sealed, stored, and transported without tampering. This is “chain of custody.”
• Sections 25–26 and 27 of the Evidence Act (in plain terms): Confessions to police or made in police custody are generally not provable (Sections 25–26). A narrow exception (Section 27) allows proof of only that part of information from an accused that distinctly leads to discovery of a new fact (e.g., a hidden weapon).
• Section 164 Cr.P.C. statement: A statement recorded by a Magistrate (often used to preserve witness versions). In this case, it was used to test contradictions in timing.
• Death reference (confirmation case): A death sentence by a Sessions Court is not executable unless the High Court confirms it. Here, the High Court not only declined confirmation but acquitted.

5. Conclusion

The Gujarat High Court’s decision is a rigorous reaffirmation of the discipline of proof in circumstantial cases, particularly those involving capital punishment. While acknowledging the brutality of the offence, it held that conviction cannot rest on unreliable “last seen” testimony, vague extra‑judicial confession, confession-like medical “history” recorded in police presence, procedurally compromised DNA evidence, or unproven discovery. The judgment’s enduring significance lies in its clear message: forensic conclusions are only as strong as the chain of custody that supports them, and procedural laxity in handling DNA evidence can undo even serious prosecutions.