Conviction Cannot Rest Solely on “Last Seen” and Unreliable Extra‑Judicial Confession: Reinforcing the Complete-Chain Standard in Circumstantial Murder Trials

1) Introduction

In SHIBU BARMAN @ KUBAL v. State of West Bengal (Calcutta High Court, Circuit Bench at Jalpaiguri; decided on 06-02-2026), the appellant challenged his conviction under Section 302 IPC for the alleged murder of his wife, Ratna Roybarman, by throttling/strangulation. The prosecution case was fundamentally circumstantial, resting primarily on (i) the doctrine of “last seen together”, (ii) allegations of long-standing domestic cruelty as motive, and (iii) an alleged extra-judicial confession said to have been made by the accused in the police station in the presence of certain witnesses.

The core legal issues before the High Court were:

  • Whether the “last seen together” circumstance was proved with sufficient proximity to the time of death to support conviction.
  • Whether the alleged extra-judicial confession was admissible/reliable enough to sustain conviction.
  • Whether the chain of circumstantial evidence was complete, excluding every hypothesis other than guilt.
  • Whether investigative lapses (non-examination of key witnesses; lack of forensic linkage) undermined the prosecution case.

2) Summary of the Judgment

The Division Bench (Chaitali Chatterjee Das, J. with Debangsu Basak, J. concurring) allowed the appeal and acquitted the appellant. The Court held that the prosecution failed to establish the guilt of the appellant beyond reasonable doubt.

Key findings included:

  • “Last seen” alone was insufficient, particularly because there was a significant temporal gap between the alleged last-seen moment and the estimated time of death, and no corroborative link was produced.
  • The alleged confession in the police station did not inspire confidence, especially given evidentiary rules about confessions in police presence and the absence of reliable corroboration.
  • Material investigative deficiencies—such as non-examination of the crucial person (Malati Barman) and failure to obtain/produce key forensic reports—left the circumstantial chain incomplete.
  • The accused’s silence/denial in his Section 313 Cr.P.C. examination could not, by itself, cure foundational gaps in the prosecution case.

The appellant was directed to be released (if not required in any other case) and to furnish bond under Section 437A Cr.P.C..

3) Analysis

3.1 Precedents Cited (and How They Shaped the Decision)

A) “Last Seen Together” as a Weak Standalone Circumstance

The High Court’s approach is anchored in Supreme Court authority that the “last seen together” doctrine is a permissive inference, not a substitute for proof. The Court relied on and applied the following:

  • Anjan Kumar Sharma and others versus State of Assam: The judgment was used to reaffirm that last seen and absence of explanation may become an additional link only when other links are already proved. Without proof of other incriminating circumstances, “last seen” cannot itself found conviction.
  • Padman Bibhar versus State of Orissa: Cited for the proposition that “last seen” is a weak piece of evidence and conviction solely on that basis, without corroboration, is unsafe.
  • Monoj alias Munna versus State of Chhattisgarh: Used to explain the logic behind the doctrine (facts within the accused’s knowledge) while reiterating that conviction cannot rest merely on being last seen with the deceased.
  • Ramprakash versus State of Chhattisgarh: Noted (via the discussion in the judgment) for the settled rule that “last seen” alone cannot ground conviction.

Applying these principles, the Court found that the prosecution claimed the deceased was last seen with the appellant on 16.02.2017 morning, while the body was found on 17.02.2017 evening, and the post-mortem suggested death about 24–36 hours prior. This time-gap and absence of intermediate corroboration diluted the probative value of “last seen,” making it unsafe as the foundation for guilt.

B) Circumstantial Evidence Must Form a Complete Chain

  • Sharad Bridhichand Sarda vs State of Maharastra: The Court reaffirmed the “golden rules” for conviction on circumstantial evidence—completeness of chain, conclusiveness of circumstances, consistency only with guilt, and exclusion of every other hypothesis.
  • Laxman Prashad @ Laxman versus State of mother brother -: Relied upon (as cited in the judgment) for the requirement that the chain must be complete and must exclude other plausible theories.
  • Raghunathpura and another versus State of Karnataka: Cited to emphasize that suspicion, however strong, cannot replace proof; the distinction between “may be true” and “must be true” governs criminal conviction.

The High Court considered allegations of prior cruelty/motive but found the prosecution produced no dependable supporting material (such as prior complaint records, hospital documents for the alleged burning incident, or independent local corroboration). Even if cruelty created suspicion, the Court held it did not complete the chain pointing exclusively to murder by the appellant.

C) Extra-Judicial Confession: Caution, Corroboration, and Admissibility

  • Shanti Devi versus State of Haryana: Applied for the rule that confessional statements recorded in the presence of police are inadmissible, except to the limited extent permitted by Section 27 of the Evidence Act, and even then only when it leads to discovery of incriminating facts.
  • Sahadevan vs State of Tamil Nadu: Extracted principles were used as the governing checklist: extra-judicial confession is weak; must be voluntary, truthful, inspire confidence, be corroborated by cogent circumstances/other evidence, free from material discrepancies, and proved like any other fact.

On facts, the Court found the alleged confession suspect: the police officer who allegedly orchestrated the meeting/telephone call and before whom the statement was made was not properly accounted for in the evidentiary narrative; key aspects were not supported by the Investigating Officer’s testimony; and the confession did not lead to any reliable discovery or forensic linkage. Consequently, the alleged confession could not be treated as a safe basis for conviction.

D) Section 106 Evidence Act / Section 313 Cr.P.C.: Limited Use as “Additional Link”

  • State of Rajashan vs Kashi Ram: Cited by the State to argue that failure to explain incriminating circumstances can provide an additional link. The High Court accepted the principle but distinguished the facts: in Kashi Ram, recoveries and possession linked the accused to the crime scene and concealment, whereas here key witnesses (like Malati Barman) were not examined and forensic reports were absent, leaving the chain incomplete.
  • Chetan vs The State of Karnataka and Abdul Nassar vs State of Kerala & Anr: Relied upon by the prosecution to argue for holistic assessment of testimony and adverse inference when accused does not explain incriminating evidence. The High Court did not reject these principles, but held that they do not permit conviction where the prosecution fails to first establish a complete and reliable chain.
  • Abdul Nasser (supra): Distinguished on facts: there the body’s location and strong forensic linkage (DNA/FSL) tightened the chain; in the present case, such scientific linkage was lacking.

3.2 Legal Reasoning (How the Court Reached the Result)

The Court’s reasoning follows a structured criminal-law method:

  1. Identify the nature of proof: The case was purely circumstantial; therefore, the Sharad Bridhichand Sarda standard controlled.
  2. Test “last seen” for proximity and exclusivity: The deceased was allegedly seen leaving with the accused to visit Malati Barman, but there was no proof of what happened thereafter, and no witness established continued company close to the time of death. The temporal gap weakened the inference.
  3. Test extra-judicial confession for voluntariness, reliability, and corroboration: The confession was said to have occurred in a police station setting; the Court treated it with heightened caution under Shanti Devi versus State of Haryana and the Sahadevan vs State of Tamil Nadu principles. It found the confession unsafe and uncorroborated.
  4. Scrutinize investigative rigor: The Court highlighted missing forensic steps (e.g., no fingerprint matching; seized bloodstained earth not sent for forensic examination; chemical reports not received/produced) and non-examination of a central witness (Malati Barman), creating evidentiary voids.
  5. Apply the “benefit of doubt” rule: The cumulative effect was that suspicion existed but proof did not. In criminal law, the accused must be shown to “must have” committed the offence, not “may have.”

3.3 Impact (Significance for Future Cases)

Although the judgment applies established Supreme Court doctrine, it is significant in at least four practical ways for future trial and appellate practice:

  • Recalibration of “last seen” prosecutions: Investigators and prosecutors are reminded that “last seen” must be supported by proximity in time and strengthened by corroborative links (CCTV, call detail records, travel/route witnesses, recoveries, forensic traces, etc.). Without this, convictions are vulnerable on appeal.
  • Higher bar for extra-judicial confessions in police-station narratives: Where a confession is alleged in a police station in the presence of “local witnesses,” courts will demand strict proof of voluntariness, circumstances, and independent corroboration—especially if Section 27 discovery does not follow.
  • Forensic non-production can be outcome-determinative: The Court treated failure to send key materials for forensic examination (and failure to produce chemical examination results) as a serious weakness in a case that otherwise depended on scientific linkage to tighten a circumstantial chain.
  • Section 313 silence cannot repair a broken chain: The judgment reinforces that adverse inference principles under Section 106/313 operate only after the prosecution first establishes a strong prima facie chain.

4) Complex Concepts Simplified

  • Circumstantial evidence “chain”: Instead of one direct eyewitness, the prosecution uses multiple facts (motive, last seen, recovery, conduct, forensic proof). All must fit together without gaps, pointing only to guilt.
  • “Last seen together” doctrine: If A is last seen alive with B, and A is found dead soon after, B may need to explain how they separated. But if there is a long time-gap or other possibilities, it is unsafe to convict on this alone.
  • Extra-judicial confession: A confession made outside court (to private persons). It is inherently risky because it can be fabricated or misunderstood; courts require caution and corroboration.
  • Section 27 Evidence Act: A narrow exception: even if a statement to police is otherwise inadmissible, the part that leads to discovery of a relevant fact (like a weapon location) may be proved.
  • Section 106 Evidence Act: When a fact is especially within the accused’s knowledge, the accused may have to explain it—but only after the prosecution proves foundational incriminating circumstances.
  • Section 313 Cr.P.C.: The accused is given a chance to explain the evidence against him. Silence or denial can sometimes strengthen an already strong chain, but cannot replace missing proof.
  • Section 437A Cr.P.C.: Even after acquittal, courts can require a bond ensuring the accused’s appearance if the case goes to a higher court.

5) Conclusion

The Calcutta High Court set aside the murder conviction because the prosecution’s case—built largely on “last seen together,” alleged prior cruelty, and a questionable extra-judicial confession—did not satisfy the strict standard for circumstantial evidence. By applying Sharad Bridhichand Sarda vs State of Maharastra and the cautionary principles from Sahadevan vs State of Tamil Nadu and Shanti Devi versus State of Haryana, the Court reinforced a central criminal-law safeguard: strong suspicion is not proof, and a conviction under Section 302 IPC demands a complete, corroborated, and exclusive chain of circumstances.