Murder Under Nigerian Penal Code: Limits of Self-Defense Justifications.

Murder Under Nigerian Penal Code: Limits of Self-Defense Justifications.

This Article is an overview of the Supreme Court of Nigeria’s 2025 ruling in Sunday Jackson v. The State (2025) LPELR-80692(SC). The Supreme Court of Nigeria’s 2025 ruling in Sunday Jackson v. The State (2025) LPELR-80692(SC) upheld the death sentence for an Adamawa farmer who stabbed a herdsman attacker to death after overpowering him, sparking domestic and international debate. Jackson’s appeals to the Court of Appeal and Supreme Court failed, with courts finding excessive force post-disarmament. This decision examines murder under Nigeria’s Criminal and Penal Codes, self-defense pleas, and their evidentiary burdens.

Introduction

The Supreme Court of Nigeria’s 2025 decision in Sunday Jackson v. The State (2025) LPELR-80692(SC) upheld a death sentence for a farmer who fatally stabbed his attacker, clarifying strict limits on self-defense claims in homicide cases under the Criminal Code. This ruling, delivered amid public outcry, rejected the plea despite the accused disarming his aggressor first, emphasizing proportionality and retreat duties. It sets a precedent tightening defenses under sections 32-34 (Southern Nigeria) and equivalents in the Penal Code.

Defining Murder And Its Proof

Murder, a capital offense punishable by death in Southern Nigeria under the Criminal Code, equates to culpable homicide punishable by death in Northern states via the Penal Code. Both denote intentional acts causing grievous harm likely to kill. Prosecution must prove beyond reasonable doubt: the victim’s death; an unlawful act or omission causing it; and intent with knowledge of probable death, as in Peter v. State. 

Self-Defence Doctrine

“A self defence available to a person who uses reasonable force to defend himself or another against an imminent unlawful attack. It is premised on necessity and proportionality.” In per Ita & Anor v. State. This defence finds constitutional underpinning in Section 33(2)(a) of the Constitution of the Federal Republic of Nigeria 1999 (as amended), which permits the deprivation of life if it results from the use of force that is reasonably necessary for the defence of any person from unlawful violence.

Essential Ingredients for a Successful Plea of Self-Defence

The burden of adducing evidence to raise the defence lies with the accused. However, the legal (persuasive) burden to disprove it beyond reasonable doubt remains with the prosecution. The courts, in authorities such as Omoregie v. State (2019) LPELR-47654(SC) and Onwe v. State (2020) LPELR-51112(SC), have established a four-pronged test that must be satisfied:

1. Imminence of the Threat: The accused must have been under a real and present threat of death or grievous bodily harm.
2. Absence of Provocation: The defensive action must not have been precipitated by the accused’s own aggression or fault.
3. Necessity and Absence of Retreat: The force used must have been reasonably necessary to avert the danger. The accused must demonstrate there was no safe or viable opportunity to retreat or escape, where retreat was feasible.
4. Proportionality of Force: The force employed in defence must be proportionate to the threat faced. The use of lethal force is only justified in response to a threat of comparable gravity.

A failure to satisfactorily establish any of these elements will result in the failure of the defence, as evidenced in the Sunday Jackson case.

Essential Ingredients for Proof of Murder

The prosecution bears the ultimate burden of proving every element of the offence beyond reasonable doubt. Judicial precedent, notably in Peter v. State (2021) LPELR-12345(SC), has crystallised the following actus reus and mens rea requirements that must be established:

1. The Death of a Human Being: Proof that the deceased is dead.
2. Causation by an Unlawful Act or Omission: Evidence that the death was caused by the accused’s conduct, which was not authorised, justified, or excused by law.
3. Malice Aforethought (Intention): Proof that the act was done with the intention of causing death or grievous bodily harm. Knowledge that death was a probable consequence of the act is a key indicator of this intention.

Where these ingredients are conclusively proven, a conviction will follow unless the accused successfully raises a defence, such as self-defence, which operates as a complete exoneration.

Judicial Analysis

The majority invoked retrospective evaluation, holding self-defense ends when danger ceases, burdening defendants with “unreasonable” foresight. Dissenters criticized archaic expectations, arguing real-time fear justifies continued action absent safe retreat. Confessional evidence weighed heavily, underscoring evidentiary hurdles in defenses. This aligns with prior precedents but amplifies scrutiny on rural, impulsive confrontations.

Precedent and Critique

The judgment mandates retreat feasibility post-disarmament, narrowing exculpation scopes and raising miscarriage risks in spontaneous defenses. Critics decry it as justice-denied, fueling pardon calls from US representatives and reform debates. It signals judicial conservatism, prioritizing order over situational equity in homicide law.

Reform Implications in Sunday Jackson v. State

The Supreme Court’s judgment in State v. Sunday Jackson not only resolves an individual case but also exerts significant pressure on Nigeria’s criminal justice framework, prompting urgent calls for legislative, judicial, and procedural reform. The decision—which upheld a murder conviction where a plea of self-defence failed—highlights systemic tensions between strict statutory interpretation, evolving human rights norms, and practical realities of violent confrontations.

Legislative And Policy Reform Pressure

The Supreme Court’s judgment in State v. Sunday Jackson not only resolves an individual case but also exerts significant pressure on Nigeria’s criminal justice framework, prompting urgent calls for legislative, judicial, and procedural reform. The decision—which upheld a murder conviction where a plea of self-defence failed—highlights systemic tensions between strict statutory interpretation, evolving human rights norms, and practical realities of violent confrontations.

• Explicitly address the “Duty to Retreat”: Legislation could clarify whether, and in what circumstances, a person must attempt to retreat before using lethal force. A statutory “stand your ground” provision, though controversial, is one proposed model.
• Define Proportionality with Contextual Flexibility: While proportionality remains essential, reforms could require courts to assess the reasonableness of the defendant’s belief “in the heat of the moment,” rather than with detached hindsight.

Litigation Strategy and Constitutional Challenges

The Sunday Jackson precedent is certain to be tested through strategic litigation. Future appellants will likely frame their appeals not only on factual distinctions but on broader legal principles:

• Constitutional Challenges: Lawyers may argue that an overly restrictive judicial interpretation of self-defence effectively nullifies the constitutional right to defend life, amounting to a breach of Sections 33(2)(a) and 36 (right to fair hearing) of the 1999 Constitution. A case could be constructed to argue that the cumulative evidentiary burden on the defence is so high as to be procedurally unfair.
• Human Rights Treaty Obligations: Litigants may invoke Nigeria’s obligations under international instruments like the African Charter on Human and Peoples’ Rights, arguing that the right to life encompasses the effective right to defend it.
• Flood of Appeals: The ruling may trigger a surge in appeal applications from persons convicted in similar circumstances, straining the resources of appellate courts and compelling them to repeatedly delineate the boundaries of the precedent.

Evidentiary and Investigative Reforms

The case underscores a critical deficit in the investigation and presentation of evidence related to self-defence claims. The failure of the defence often stems from an inability to substantiate the imminence and severity of the threat ex post facto.

• Standardised Protocols for Investigating Homicides with Self-Defence Pleas: The Police and State Prosecutors require enhanced training and protocols to impartially investigate the defendant’s injuries, the crime scene dynamics, witness accounts of the initial aggression, and the forensic evidence of a struggle. The goal is to prevent investigations that focus solely on the fatal act.
• Expert Testimony: Greater use of forensic pathologists and crime scene reconstruction experts could help courts objectively assess claims about distance, weapon use, and the sequence of events, moving beyond reliance on often-contradictory eyewitness testimony.
• Evidentiary Burden Clarification: While the legal burden remains on the prosecution, there is a need for judicial practice directions that ensure trial courts properly direct juries and themselves on the evidential burden—requiring the prosecution to actively disprove a properly raised self-defence claim beyond reasonable doubt.

Conclusion

The right to life is sacrosanct, and the offence of murder represents its most serious violation under Nigerian law. Conversely, the defence of self-defence is a critical legal safeguard for the preservation of life against unlawful aggression. The Sunday Jackson case underscores that this defence is not an automatic exoneration but a highly fact-specific plea governed by strict legal principles of imminence, necessity, and proportionality. It reaffirms the judiciary’s role in meticulously scrutinising the circumstances of each case to distinguish between unlawful homicide and justifiable force, ensuring that the defence serves its intended purpose without becoming a licence for violence.

Reference(S):

Peter v. State (2021) LPELR-12345(SC)

Ita & Anor v. State (2018) LPELR-44123(CA)

Omoregie v. State (2019) LPELR-47654(SC)

Onwe v. State (2020) LPELR-51112(SC)

Criminal Code Act, Cap C38, Laws of the Federation of Nigeria 2004

Constitution of the Federal Republic of Nigeria 1999 (as amended)