Introduction:
In a significant reaffirmation of foundational principles of criminal jurisprudence, the Calcutta High Court set aside the conviction of a man accused of murdering his wife, holding that the prosecution had failed to establish guilt beyond reasonable doubt through a complete and reliable chain of circumstantial evidence. The decision was rendered by a Division Bench comprising Justice Debangsu Basak and Justice Chaitali Chatterjee Das, while allowing the criminal appeal filed by Shibu Barman @ Kubal, who had earlier been convicted under Section 302 of the Indian Penal Code by the Court of the Additional Sessions Judge, Dinhata. The High Court emphasized that criminal conviction cannot rest on suspicion, conjectures, or weak circumstantial links such as an uncorroborated “last seen together” theory or an unreliable extra-judicial confession. The Court underscored that where a case is based purely on circumstantial evidence, each circumstance must be firmly established and must collectively form an unbroken chain pointing only towards the guilt of the accused and ruling out every other plausible hypothesis. Finding glaring inconsistencies, investigative lapses, and lack of forensic corroboration in the prosecution’s case, the Court held that the conviction was unsustainable and ordered the appellant’s immediate release, subject to statutory compliance.
Arguments:
The prosecution’s case was built entirely on circumstantial evidence arising out of the death of the appellant’s wife, whose body was discovered on February 17, 2017, lying in an agricultural field with visible injuries around her neck suggestive of strangulation. Initially, a case of murder was registered against unknown persons, and during the course of investigation, suspicion fell upon the deceased’s husband. The prosecution alleged that the appellant subjected the deceased to continuous physical and mental cruelty and that this provided the motive for the crime. Family members of the deceased, including her parents and relatives, deposed before the trial court alleging prolonged domestic violence, harassment, and torture by the appellant. The prosecution also relied heavily on the testimony of the couple’s minor children, who stated that on the morning of February 16, 2017, their mother had left home with the appellant on a bicycle to recover some money from a villager and never returned thereafter. According to the prosecution, this established the “last seen together” circumstance, suggesting that the appellant was the person last in the company of the deceased before her death.
Further strengthening its case, the prosecution relied on the post-mortem report, which concluded that the death was homicidal in nature and caused by throttling and smothering. It was argued that the medical evidence conclusively ruled out accidental or suicidal death and supported the theory of murder. The prosecution also claimed that after his arrest, the appellant made an extra-judicial confession at the police station in the presence of police personnel and local witnesses, admitting that he had killed his wife. According to the prosecution, although extra-judicial confessions are generally weak, the same could be relied upon when supported by other circumstances. It was submitted that when the allegations of cruelty, last seen evidence, medical opinion, and confession were read together, they formed a complete chain of circumstances that pointed unmistakably towards the guilt of the appellant and excluded any hypothesis of innocence. On this basis, the trial court had convicted the appellant and sentenced him to life imprisonment.
On the other hand, the appellant vehemently challenged the conviction, contending that the entire prosecution case was riddled with gaps, inconsistencies, and unproven assumptions. It was argued that the alleged motive of cruelty was not supported by any prior complaint, medical record, or independent witness, and that vague and omnibus allegations made after the death could not be treated as reliable proof of motive. The defence pointed out that none of the prosecution witnesses could produce any documentary or contemporaneous evidence showing that the deceased had ever approached the police, local authorities, or medical professionals regarding alleged abuse. With respect to the “last seen together” theory, it was argued that the time gap between the deceased allegedly leaving with the appellant on the morning of February 16 and the recovery of her body on the evening of February 17 was too wide to sustain such a theory. The post-mortem report indicated that death could have occurred within a window of 24 to 36 hours, leaving a significant period during which the whereabouts of the deceased were completely unaccounted for by the prosecution. The defence emphasized that last seen evidence, by its very nature, is a weak form of circumstantial evidence and cannot form the sole basis of conviction unless the time gap is so narrow that the possibility of any third person’s intervention is completely ruled out.
The appellant also challenged the alleged extra-judicial confession, arguing that any confession made before police officers is inadmissible in law except to the limited extent permitted under Section 27 of the Indian Evidence Act. It was pointed out that the prosecution failed to examine key police officers allegedly present when the confession was made, and the testimonies of other witnesses on this aspect were contradictory and unreliable. Additionally, the defence highlighted serious investigative lapses, including the failure to conduct forensic examinations despite visible nail and finger marks on the deceased’s neck. No fingerprints were lifted, no DNA or scientific comparison was undertaken, seized materials were not sent for chemical analysis, and forensic reports were conspicuously absent from the record. According to the defence, these omissions fatally weakened the prosecution case and made it unsafe to uphold a conviction for murder.
Judgment:
After an exhaustive analysis of the evidence and the legal principles governing cases based on circumstantial evidence, the Calcutta High Court allowed the appeal and set aside the conviction and sentence imposed upon the appellant. The Division Bench began by reiterating the well-settled rule that in cases resting purely on circumstantial evidence, the prosecution must establish each circumstance beyond reasonable doubt and further demonstrate that all the proved circumstances, when taken together, form a complete chain leading only to the conclusion that the accused is guilty. The Court emphasized that any missing link, inconsistency, or alternative hypothesis consistent with innocence would entitle the accused to benefit of doubt.
On the question of motive, the Court held that although allegations of cruelty were made by family members of the deceased, such allegations remained unsubstantiated by any independent or documentary evidence. The Bench observed that there were no prior complaints, no medical records of injuries, and no testimony from neutral witnesses to support the claim of prolonged abuse. The Court noted that while motive is not always essential in a murder case, where the prosecution relies heavily on circumstantial evidence, proof of motive assumes greater significance, and vague allegations cannot be elevated to decisive proof.
Dealing with the “last seen together” theory, the Court categorically held that this form of evidence is inherently weak and cannot, by itself, form the basis of conviction. The Bench noted that the deceased was allegedly last seen with the appellant on the morning of February 16, whereas her body was recovered only on the evening of February 17. The post-mortem report indicated a possible window of death within 24 to 36 hours, leaving a substantial time gap during which the prosecution failed to establish the deceased’s movements or exclude the possibility of intervention by a third party. Reiterating established precedent, the Court held that unless the time gap between last seen and death is so small as to rule out all other possibilities, reliance on this theory would be unsafe.
The Court also rejected the alleged extra-judicial confession, holding that such confessions carry weak evidentiary value and must be approached with extreme caution. The Bench observed that a confession allegedly made in the presence of police officers is inadmissible in law, except to the extent permitted under Section 27 of the Evidence Act, and that the prosecution failed to bring the case within that exception. The non-examination of crucial police witnesses and the lack of consistency in the testimonies of other witnesses further eroded the credibility of this piece of evidence.
Equally significant were the Court’s observations on investigative lapses. The Bench noted that despite visible nail and finger marks on the neck of the deceased, no forensic or scientific investigation was undertaken. The failure to conduct fingerprint analysis, chemical examination, or other forensic tests, and the absence of corresponding reports, left critical gaps in the prosecution’s case. The Court held that such omissions could not be brushed aside, particularly in a case where the prosecution sought to rely exclusively on circumstantial evidence.
Reaffirming the cardinal principle that suspicion, however strong, cannot take the place of proof, the Court held that the prosecution had failed to establish a complete and reliable chain of circumstances pointing only towards the guilt of the appellant. The presumption of innocence, the Court observed, remains intact unless displaced by proof beyond reasonable doubt. Since the prosecution failed to meet this high threshold, the conviction could not be sustained. Accordingly, the appeal was allowed, the conviction and sentence were set aside, and the appellant was directed to be released forthwith, subject to compliance with Section 437A of the Code of Criminal Procedure.