Susan Kigula and Mandatory Death Sentences

Attorney General v Susan Kigula and 417 Others, Constitutional Appeal No. 03 of 2006, [2009] UGSC 6, is one of the most significant criminal justice decisions ever delivered by the Supreme Court of Uganda. Its importance does not lie only in the fact that it concerned the death penalty. It also asked who should decide whether death is the proper sentence, whether a convicted person must be heard before punishment is fixed, and whether the State may leave a prisoner under a confirmed death sentence for an indefinite period. The Court did not abolish the death penalty. Instead, it placed firm constitutional limits on how capital punishment may be imposed and maintained.

The judgment was delivered by a strong panel of the Supreme Court. The bench included Odoki CJ, Tsekooko JSC, Mulenga JSC, Kanyeihamba JSC, Katureebe JSC, Kitumba Ag JSC and Egonda Ntende Ag JSC. The majority judgment spoke for the Court on the central issues, while Egonda Ntende Ag JSC wrote separately on the reach of Articles 24 and 44 in relation to the method of execution. The case has remained a major reference point because it sits at the intersection of life, dignity, fair hearing, judicial discretion, legislative power and the executive power of mercy.

The respondents were prisoners who had been convicted of capital offences and sentenced to death under Ugandan law. They challenged the constitutionality of the death penalty itself. In the alternative, they challenged the mandatory nature of certain death sentences, the delay in carrying out executions after final confirmation, and the legal method of execution. The Attorney General defended the existing law, arguing that the Constitution recognised the death penalty and that Parliament could prescribe it. The Constitutional Court partly accepted the prisoners’ arguments. The matter then reached the Supreme Court through an appeal and cross appeal.

The first major question was whether the death penalty itself was unconstitutional. The Supreme Court held that it was not. Article 22(1) allows deprivation of life in execution of a sentence passed after a fair trial by a competent court. The Court treated that wording as an express constitutional recognition that death could still exist as a lawful punishment in Uganda. In other words, the Court did not read the rights to dignity and protection from cruel treatment as abolishing the death penalty by implication. Some readers may find that conclusion cautious. Others may see it as faithful to the constitutional text. What matters for precedent is that the Court distinguished between the existence of the death penalty and the way it is imposed.

That distinction became decisive on mandatory sentencing. The Court strongly rejected laws that made death automatic after conviction. A mandatory death sentence prevents a judge from considering the individual circumstances of the offence and the offender. It treats every person convicted of the relevant offence as though their cases are morally and legally identical. The Supreme Court held that this was inconsistent with the right to a fair hearing and with the judicial function of sentencing. A person facing death must have an opportunity to speak in mitigation, and the judge must have discretion to decide whether death is truly appropriate in the particular case.

This part of the judgment changed Ugandan sentencing in a practical way. Before the decision, a conviction for certain offences could lead directly to death because Parliament had already fixed the sentence. After the decision, death became the maximum sentence rather than the automatic result. That change may sound technical, but in criminal practice it is enormous. It means that age, level of participation, prior record, remorse, provocation, personal history, mental state, possibility of reform and other mitigating factors can be considered. Two people convicted under the same offence provision may have very different stories. The Constitution requires the court to listen before deciding punishment.

The Court’s reasoning is also important for separation of powers. Parliament may define offences and prescribe punishments. That is part of legislative authority. But the Court appears to suggest that Parliament cannot remove the sentencing function so completely that the judge becomes a mere clerk announcing a predetermined result. Sentencing is part of the administration of justice. It requires judgment, not only arithmetic. This does not mean judges are free to ignore statutes. It means statutory punishment must leave room for constitutional fairness where the punishment is the gravest the law can impose.

The second major part of the case concerns delay after final confirmation of a death sentence. The Supreme Court drew a careful line. It did not count the entire period from conviction or sentence, because appeals and ordinary judicial processes must be allowed to take place. The relevant period begins after the highest appellate court has confirmed the sentence and the matter reaches the stage where the executive may consider the petition for mercy under Article 121. The Court held that if the executive does not act within three years after confirmation, the death sentence is deemed commuted to life imprisonment without remission.

That rule has a strong human and institutional logic. A legal system may permit capital punishment, but it should not keep a person indefinitely under the uncertainty of a confirmed death sentence while the executive does nothing. The three year rule forces administrative responsibility. It also recognises that punishment is not only the final act. Prolonged uncertainty after all judicial remedies have ended may itself become a form of severe suffering. The Court did not use careless language here. It crafted a concrete remedy that prison authorities, lawyers and courts could apply.

On the method of execution, the majority held that hanging, as then provided by Ugandan law, was not unconstitutional. The majority reasoned that because the Constitution permitted the death penalty, and because the evidence did not establish a constitutionally required alternative, the Court could not invalidate the method on the record before it. At the same time, the Court urged legislative attention to evolving standards. Egonda Ntende Ag JSC took a different view. His separate judgment treated the protections in Articles 24 and 44 as applying strongly to the method of execution and considered the evidence sufficient to find the method unconstitutional. His reasoning remains important because it gives future litigants a more rights protective path, even though it was not the majority position.

The rule of law from Susan Kigula can be put in simple terms. The death penalty is not unconstitutional in Uganda where it follows a fair trial before a competent court. Mandatory death sentences are unconstitutional because they deny mitigation, remove judicial discretion and interfere with the court’s sentencing role. After the highest appellate court confirms a death sentence, the executive must act within three years on the petition for mercy, failing which the sentence is treated as commuted to life imprisonment without remission. Even where death remains lawful, its use must pass through fair procedure and constitutional accountability.

One strength of the judgment is that it did not treat constitutional interpretation as a choice between total abolition and total deference. The Court preserved the death penalty as textually recognised, but it refused to preserve the most rigid and unfair features of the old system. That makes the case useful beyond capital punishment. It supports the broader principle that a law may be constitutionally acceptable in general but unconstitutional in the way it operates. Automatic punishments, rigid sentencing schemes and procedures that silence mitigation may all be vulnerable under this reasoning.

There is room for critique. The decision left the death penalty standing, and those who read Articles 24 and 44 broadly may argue that the Court should have gone further. It also accepted the majority position on the method of execution, while leaving legislative reform largely to Parliament. Yet the judgment’s practical effects were still substantial. It moved Ugandan law away from automatic death sentencing and toward individualised justice. It also gave prisoners under confirmed death sentences a clear legal route where executive delay became excessive.

For defence lawyers, the lesson is direct. A mitigation hearing in a capital case is not a courtesy. It is constitutionally required. Lawyers must prepare evidence about the offender, the circumstances of the offence, family background, health, remorse, rehabilitation, prison conduct and any other matter that may bear on sentence. For prosecutors, the case means that a conviction is not enough. If the State seeks death, it must justify why that punishment is necessary in the particular case. For judges, the decision requires sentencing reasons that show genuine consideration rather than automatic repetition of statutory language.

The case also connects with earlier punishment decisions such as Attorney General v Salvatori Abuki. Both cases insist that punishment remains subject to constitutional control after conviction. Abuki concerned exclusion from home. Susan Kigula concerned capital sentencing. The settings are different, but the underlying idea is similar: the Constitution does not stop working once guilt is established. A convicted person remains a rights bearing person, and the court remains responsible for ensuring that punishment is lawful, fair and consistent with dignity.

The lasting value of Susan Kigula is that it made sentencing matter. It required judges to hear the person before imposing the most severe punishment. It required the executive to act within a defined period after final confirmation. It also preserved a debate about how Articles 24 and 44 should apply to the harshest forms of state punishment. The case remains a central precedent for fair hearing, separation of powers, mitigation, death row delay and the constitutional limits of legislative penalties. It did not end Uganda’s death penalty debate, but it changed the terms on which that debate must be argued.

Source note. This article is based on Attorney General v Susan Kigula & 417 Ors, Constitutional Appeal No. 03 of 2006, [2009] UGSC 6, Supreme Court of Uganda, judgment delivered on 21 January 2009, and the earlier Constitutional Court decision in Susan Kigula & 416 Ors v Attorney General. It also refers to the Constitution of the Republic of Uganda, 1995, the Penal Code Act, the Trial on Indictments Act and the Anti-Terrorism Act, 2002. It is prepared for public legal education only and should not be treated as legal advice in any criminal case.

Suggested citation

Ronald Serwanga, “Susan Kigula and Mandatory Death Sentences” East Africa Legal Insight (27 June 2026).