Case at a Glance
Section 303 of the Indian Penal Code said that a person under sentence of imprisonment for life who commits murder “shall be punished with death” — no alternative, no discretion. A five-judge Constitution Bench held that this mandatory death sentence violated Articles 14 and 21: there was no rational basis for treating murders by life-convicts as a separate class, and a law that shut out the court’s discretion and the accused’s right to be heard on sentence was not fair, just and reasonable. The Court struck down Section 303 as unconstitutional and void, and held that all murders would henceforth be punishable under Section 302. Justice O. Chinnappa Reddy wrote a concurring opinion.
Section 302 IPC allowed a court to punish murder with death or imprisonment for life. Section 303 was different: if the murderer was already under a sentence of life imprisonment, death was mandatory. The Court noted that the framers of the 1860 Code appear to have had in mind life-convicts who kill jail officials, and that the Law Commission had twice declined to recommend change, while a 1972 amendment bill to delete Section 303 had lapsed.
The challenge came through a batch of seven matters — criminal appeals from the Punjab & Haryana and Bombay High Courts, a special leave petition and writ petitions — heard together by a Constitution Bench. The Court had, in Bachan Singh v. State of Punjab, upheld the death penalty under Section 302 precisely because it was an alternative sentence; Section 303 raised the question left open there.
The Key Question Before the Court
Is a mandatory sentence of death for a murder committed by a person already under a life sentence, as prescribed by Section 303 IPC, consistent with Articles 14 and 21 of the Constitution?
No Rational Basis, No Discretion, No Fair Procedure
Chief Justice Chandrachud, writing the lead opinion, found no rational basis for classifying murders by life-convicts separately. A life sentence could have been imposed for offences far removed from violence — the Court gave the example of a person serving life for forgery — yet any murder by such a person would attract certain death. The circumstances of the second offence may be just as compelling as any other: the Court gave examples such as a life-convict provoked inside jail, or a convict on parole who discovers his wife’s infidelity. “It is impossible to see the rationale of this aspect of section 303,” the Court said, and “There is no justification for prescribing a mandatory sentence of death” for such offences.
On Article 21, the Court relied on Maneka Gandhi v. Union of India and Sunil Batra v. Delhi Administration, (1978) 08 SC CK 0001: procedure depriving a person of life must be fair, just and reasonable. A mandatory death sentence takes away the right to be heard on sentence under Section 235(2) of the Code of Criminal Procedure and the court’s duty to give special reasons under Section 354(3). “The legislature cannot make relevant circumstances irrelevant,” the Court said. Justice Chinnappa Reddy, concurring, emphasised that judicial discretion was what had kept the death penalty valid under Section 302, and that “Section 303 excludes judicial discretion.” The Court concluded: “We strike down section 303 of Penal Code as unconstitutional and declare it void.” All cases of murder would fall under Section 302, with no mandatory death sentence, and the individual cases were directed to be placed before a Division Bench for disposal on merits.
What the Court Actually Held
- Section 303 IPC, which prescribed a mandatory death sentence for murder by a life-convict, violates Articles 14 and 21 and is struck down as unconstitutional and void.
- There is no rational basis for treating murders committed by persons under a life sentence as a separate class deserving certain death.
- A law that removes judicial discretion in sentencing and the right to be heard on sentence is not fair, just and reasonable procedure under Article 21.
- All cases of murder will be dealt with under Section 302 IPC; the individual matters were sent to a Division Bench for decision on merits.
Why This Judgment Matters
- It established that a mandatory death sentence is incompatible with the Constitution, cementing the Bachan Singh framework of individualised sentencing.
- It shows how Maneka Gandhi transformed Article 21 into a guarantee of fair substantive law, not merely procedure.
- The debate is live again: Section 104 of the Bharatiya Nyaya Sanhita, 2023 now provides for death or imprisonment for the remainder of natural life for murder by a life-convict — an alternative, not a mandatory sentence.
What Should Advocates Take Away From the Judgment?
For the Public
- No offence of murder in India carries an automatic death sentence after Mithu; the court must consider the individual case.
- The accused has a right to be heard on the question of sentence.
- The judgment protects judicial discretion as a safeguard of life.
For Counsel
- Rely on Mithu against any statutory scheme that removes sentencing discretion in capital cases.
- Insist on a genuine sentencing hearing and special reasons for any death sentence.
- Read Mithu with Bachan Singh and Maneka Gandhi when arguing proportionality.
Key Takeaways
- Mandatory death sentences are unconstitutional under Articles 14 and 21.
- Section 303 IPC was declared void in 1983.
- Sentencing discretion and the right to be heard on sentence are part of fair procedure.
- Murder by a life-convict is now dealt with under the general sentencing scheme, with discretion.
Frequently Asked Questions
What did Section 303 IPC say?
It provided that whoever, being under sentence of imprisonment for life, commits murder shall be punished with death — with no alternative punishment.
Why was it struck down?
The Court found no rational basis for the classification (Article 14) and held that taking away judicial discretion and the hearing on sentence made the law unfair, unjust and unreasonable (Article 21).
Is there a similar provision in the new criminal laws?
Section 104 of the Bharatiya Nyaya Sanhita, 2023 deals with murder by a life-convict but provides for death or imprisonment for life (meaning the remainder of natural life), so the court retains a choice.
Conclusion
Mithu is the Supreme Court’s clearest statement that the gravest punishment cannot be handed out by formula. By striking down Section 303, the Constitution Bench insisted that every death sentence must be the product of a judge weighing the particular crime and the particular offender.
Practical takeaway: In any capital case, insist on a full, separate hearing on sentence and on reasons addressed to the individual accused — the core protections Mithu refused to let the legislature remove.
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