Under what conditions culpable homicide is murder? Explain.

Culpable homicide becomes murder when the killing falls within the basic definition of culpable homicide (Section 299 IPC / Section 100 BNS) and, in addition, satisfies any one of the four aggravated conditions laid down in Section 300 IPC, now reproduced in Section 101 of the Bharatiya Nyaya Sanhita—provided none of the five Exceptions applies. In such cases, the law treats the homicide as the first degree of culpable homicide and punishes it under Section 302 IPC / Section 103 BNS.

Step 1 – Genus and species: Sections 299 & 300 IPC / 100 & 101 BNS

The Code first defines culpable homicide (Section 299 IPC / Section 100 BNS) and then identifies when that culpable homicide rises to the level of murder (Section 300 IPC / Section 101 BNS).

Section 299 IPC (Section 100 BNS) says that whoever causes death by doing an act with:

• intention to cause death, or

• intention to cause such bodily injury as is likely to cause death, or

• knowledge that his act is likely to cause death,

commits culpable homicide.

Section 300 IPC (Section 101 BNS) then provides:

“Except in the cases hereinafter excepted, culpable homicide is murder, if…”

and sets out four clauses (a–d). These clauses do not create a new offence; they mark out the most aggravated forms of culpable homicide.

The Supreme Court in State of A.P. v. Rayavarapu Punnayya described culpable homicide as the genus and murder as its species. All murder is culpable homicide, but not all culpable homicide is murder; only those falling within Section 300 / Section 101 (and outside the Exceptions) are murder.

Under BNS, Section 100 corresponds to Section 299 IPC and Section 101 to Section 300 IPC, with no substantive change; the classic IPC case law therefore continues to apply.

Step 2 – The four conditions when culpable homicide is murder

Culpable homicide is murder under Section 300 IPC / Section 101 BNS when any one of these four conditions is satisfied and no Exception applies.

1. Intention to cause death – Clause “Firstly” / Section 101(a) BNS

Condition
If the act causing death is done with the intention of causing death, culpable homicide is murder.

This simply reproduces Section 299(a) IPC / Section 100(a) BNS. Once intention to kill is proved, and no Exception operates, the offence is murder.

Illustration (statutory)
Section 101 illustration (a): A shoots Z with the intention of killing him; Z dies. A commits murder.

Case law
In Rawalpenta Venkalu v. State of Hyderabad, the accused, due to land disputes and after taking liquor, locked the victim inside his house and set it on fire, preventing escape. The Supreme Court held that the facts showed a clear intention to cause death; the homicide was murder under the first clause and punishable under Section 302 IPC.

Under BNS, the same conduct would attract Section 101(a) and punishment under Section 103.

2. Intention to cause a specially dangerous injury – Clause “Secondly” / Section 101(b) BNS

Condition
Culpable homicide is murder if the act is done:

• with the intention of causing bodily injury to the victim; and

• the injury intended is of such a kind that the offender knows it is likely to cause the death of that particular person.

This clause addresses cases where the accused takes advantage of a known special vulnerability—a disease, infirmity, age, or other condition which makes even a lesser injury lethal.

Illustration (statutory)
Section 101 illustration (b): A knows that Z is suffering from a disease such that a blow is likely to cause his death and strikes him intending to cause bodily injury. Z dies. A is guilty of murder, even though the blow would not ordinarily kill a healthy man. But if A does not know of the disease and gives such a blow as would not in the ordinary course kill a healthy person, he is not guilty of murder.

Relation to culpable homicide
This is the aggravated counterpart of Section 100(b) BNS / Section 299(b) IPC. Under Section 100(b), the injury is merely “likely to cause death”; under Section 101(b), the offender knows that to this victim it is likely to be fatal, so the law escalates the liability to murder.

3. Intention to cause an injury sufficient in the ordinary course of nature to cause death – Clause “Thirdly” / Section 101(c) BNS

Condition
Culpable homicide is murder where:

• The act is done with the intention of causing bodily injury to any person; and

• The bodily injury intended to be inflicted is sufficient in the ordinary course of nature to cause death.

This clause is central in practice. The accused need not intend death; it is enough that he intentionally inflicts an injury which, judged objectively, is so grave that death would be the most probable result.

Illustration (statutory)
Section 101 illustration (c): A intentionally gives Z a sword‑cut or club‑wound sufficient in the ordinary course of nature to cause death. Z dies. A is guilty of murder, even if he did not specifically intend Z’s death.

Virsa Singh v. State of Punjab – the four‑step test

Virsa Singh is the leading Supreme Court decision on Clause Thirdly. The accused thrust a spear into the abdomen of the deceased; three coils of intestines protruded; the doctor said the injury was sufficient in the ordinary course of nature to cause death.

The Court held that to bring a case under Clause Thirdly (Section 300 “Thirdly”, now Section 101(c)), the prosecution must prove:

1. A bodily injury is present (objective).

2. The nature of that injury is proved (objective).

3. It was intended to inflict that very injury – it was not accidental or unintended (subjective intention).

4. The injury so intended and inflicted is sufficient in the ordinary course of nature to cause death (objective medical‑legal test).

Once these four are proved, the case is murder under Clause Thirdly, even if the accused did not desire the victim’s death. This distinguishes Clause Thirdly from Section 100(b) BNS / Section 299(b), where the injury is only “likely” to cause death and not shown to be ordinarily fatal.

Multiple injuries – Punnayya and Anda

In Anda v. State of Rajasthan and in State of A.P. v. Punnayya, the Supreme Court held that “bodily injury” in Clause Thirdly can be a set of injuries taken together. Where several intentional injuries, considered cumulatively, are sufficient in the ordinary course of nature to cause death, the culpable homicide is murder under Clause Thirdly.

In Punnayya, the accused mercilessly beat an old man on his limbs with sticks, causing 19 injuries, 9 of them grievous; the doctor opined that the injuries cumulatively were sufficient in the ordinary course to cause death. The Court treated the case as murder under Clause Thirdly, unless brought within any Exception.

4. Imminently dangerous acts without excuse – Clause “Fourthly” / Section 101(d) BNS

Condition
Culpable homicide is murder if:

• The offender knows that his act is so imminently dangerous that it must, in all probability, cause death or such bodily injury as is likely to cause death; and

• He commits such act without any excuse for incurring that risk.

This clause covers situations where there may be no intention to kill or injure any particular person, yet the act is so dangerous to human life that death is a highly probable result, and there is no lawful justification for taking that risk.

Illustration (statutory)
Section 101 illustration (d): A, without any excuse, fires a loaded cannon into a crowd and kills one person. A is guilty of murder, even without a design to kill any particular individual.

Relation to culpable homicide
This is the aggravated version of Section 100(c) BNS / Section 299(c) IPC. Under Section 100(c), it is enough that the act is likely to cause death; under Section 101(d), the accused knows the act is so dangerous that death will in all probability occur, and he has no excuse. The higher probability plus absence of excuse turns culpable homicide into murder.

Modern jurisprudence has applied this clause to cases like mass adulteration of liquor with methyl alcohol, where courts have treated the deaths as murder because mixing lethal poison in drink for large‑scale consumption is an imminently dangerous act undertaken without excuse.

Step 3 – Role of Exceptions and punishment

Even when one of the four clauses is satisfied, the homicide will not be murder if the case falls under any of the five Exceptions to Section 300 IPC / Section 101 BNS (grave and sudden provocation, exceeding private defence, public servant exceeding power in good faith, sudden fight, consent of the deceased). In that event, the offence is reduced to culpable homicide not amounting to murder.

The Supreme Court in Punnayya uses this to classify three degrees of culpable homicide:

• First degree – Murder

  • Culpable homicide that falls within any of the four clauses of Section 300 / Section 101 and is not covered by an Exception.

  • Punishable under Section 302 IPC / Section 103 BNS (death or life imprisonment and fine).

• Second degree – Culpable homicide not amounting to murder (with intention)

  • Either (a) culpable homicide that does not reach the higher thresholds of Section 300 / Section 101, or (b) cases falling under Section 300 / Section 101 but protected by an Exception.

  • Punishable under Section 304 Part I IPC / Section 105 first limb BNS: life imprisonment or imprisonment between five and ten years and fine.

• Third degree – Culpable homicide not amounting to murder (knowledge only)

  • Culpable homicide under Section 299(c) / Section 100(c), with mere knowledge that death is likely, but no intention to cause death or such bodily injury.

  • Punishable under Section 304 Part II IPC / Section 105 second limb BNS: imprisonment up to ten years and fine.

Thus, culpable homicide is murder when:

1. It is culpable homicide under Section 299 IPC / Section 100 BNS; and

2. It fits at least one of the four clauses of Section 300 IPC / Section 101 BNS; and

3. It does not fall within any of the five Exceptions.

Short set of illustrations tying it together

1. Murder under Clause Firstly (101(a) BNS)

   • A lies in wait and shoots B in the head intending to kill him.

   • Culpable homicide under Section 100(a) BNS and murder under Section 101(a). No Exception applies. Punishable under Section 103.

2. Murder under Clause Thirdly (Virsa Singh pattern, 101(c) BNS)

   • A intentionally thrusts a spear into B’s abdomen; doctor says the wound is sufficient in the ordinary course of nature to cause death.

   • All four Virsa Singh conditions are met; the homicide is murder under Clause Thirdly. Punishment: Section 302 IPC / Section 103 BNS.

3. Murder under Clause Fourthly (101(d) BNS)

   • A mixes a highly poisonous substance into country liquor and sells it during a festival, knowing people will drink it; several die.

   • A knew his act was imminently dangerous and must, in all probability, cause death; he had no excuse. The culpable homicide of each victim is murder under Clause Fourthly.

4. Same culpable homicide, but reduced by Exception

   • A, on grave and sudden provocation, stabs B in the chest causing an injury otherwise falling under Clause Thirdly.

   • Without the provocation, it would be murder; because Exception 1 applies, the offence is only culpable homicide not amounting to murder, attracting Section 304 Part I IPC / Section 105 first limb.