CHUNNI BAI v. STATE OF CHHATTISGARH, 2025
The Supreme Court reduced the appellant’s sentence from life imprisonment for murder (Section 302) to culpable homicide not amounting to murder (Section 304 Part II), taking into account the possibility of her mental instability at the time of the crime.

Judgement Details
Court
Supreme Court of India
Date of Decision
30 April 2025
Judges
Justice B.V. Nagarathna ⦁ Justice N.K. Singh
Citation
Acts / Provisions
Facts of the Case
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Chunni Bai, the appellant, was convicted for the murder of her two young daughters, aged 3 and 5 years, and sentenced to life imprisonment by the trial court.
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During the trial, Chunni Bai took the plea that she was under the influence of an invisible power when the murders occurred.
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The Chhattisgarh High Court upheld her conviction, and she appealed to the Supreme Court challenging the findings.
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In the Supreme Court, the appellant argued that she committed the killings due to an impaired mental state, and therefore, she sought to have her conviction reduced to a lesser offense, culpable homicide not amounting to murder (Section 304 Part II IPC).
Issues
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Whether the conviction under Section 302 IPC (murder) should be altered to Section 304 Part II IPC (culpable homicide not amounting to murder) considering the appellant's plea of temporary unsoundness of mind.
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Whether the absence of a motive in this case could be indicative of insanity or an impaired mental state.
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Whether the absence of conclusive medical evidence regarding the appellant's mental condition could still warrant a reduction in the charge.
Judgement
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The Supreme Court acknowledged the bizarre and inexplicable behavior of the appellant, who committed the crime without any clear motive. Given the absence of animosity or prior conflict with her children, the Court found it reasonable to infer that the appellant was likely suffering from some form of temporary mental impairment.
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The Court noted that no concrete evidence was presented to establish that the appellant was insane under Section 84 IPC (which defines unsoundness of mind), but the lack of motive and her strange behavior raised reasonable doubt about her mental stability at the time of the crime.
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Reduction of Conviction: The Court reduced her conviction from murder (Section 302) to culpable homicide not amounting to murder (Section 304 Part II IPC), as there was a reasonable doubt regarding the appellant's intent to kill.
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The Court held that while the appellant’s claim of being influenced by an "invisible power" lacked a clear legal basis for insanity, the absence of motive, the inexplicable nature of the crime, and her emotional outbursts following the killings supported the possibility that she was mentally impaired at the time.
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Considering that the maximum punishment under Section 304 Part II IPC is 10 years and the appellant had already served 9 years and 10 months in custody, the Court ordered her release.
Held
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The absence of motive in cases involving grave crimes like murder may lend credence to claims of insanity or impaired mental conditions, especially when the accused's actions are bizarre or inexplicable.
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The plea of unsoundness of mind requires careful scrutiny by the court, particularly in homicide cases, where the absence of a motive is a crucial factor in determining intent and mens rea (mental state).
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The court’s duty is to ensure that the accused’s mental stability is properly considered, especially when their actions indicate possible temporary insanity or impaired judgment.
Analysis
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The Court acknowledged that, given the peculiar and rural setting of the crime, the appellant’s lack of formal education and her inability to articulate her condition in legally recognized terms could explain her attribution of her actions to an "invisible power". This suggested that her mental impairment may have led to a temporary lapse in judgment.
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The Court emphasized that the relationship between mother and child is one of the most sacred, and the crime committed by the appellant was contrary to natural human behavior. This made the case even more complex and difficult to understand.