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Supreme CourtAllowedPetition E018 of 2023

Republic v Mwangi; Initiative for Strategic Litigation in Africa (ISLA) & 3 others (Amicus Curiae)

Supreme Court of Kenya
12 July 2024
Martha Karambu KoomeM. K. KoomeMohammed Khadhar IbrahimM. K. IbrahimSmokin Charles WanjalaS. C. WanjalaNjoki Susanna NdunguNjoki NdunguIsaac LenaolaI. Lenaola
9,963 words in judgment
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The bottom line

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Supreme Court reinstates 20-year sentence for defilement, ruling minimum sentences stand unless properly challenged.

What this practically means

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The Supreme Court has overturned a Court of Appeal decision that reduced a defilement sentence based on constitutional arguments. The Supreme Court ruled that the Court of Appeal overstepped its authority by declaring minimum sentences for sexual offences unconstitutional without a proper challenge at the High Court first. The Court confirmed that its previous Muruatetu decision only applied to the death penalty for murder, not to minimum sentences in other laws. Courts cannot reduce sentences below legal minimums unless a specific constitutional case is filed and won.

Executive summary

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The Supreme Court allowed the Republic's appeal against the Court of Appeal's decision that had declared mandatory minimum sentences under the Sexual Offences Act unconstitutional and reduced the respondent's sentence from 20 to 15 years. The respondent had been convicted of defilement of a 15-year-old girl and sentenced to 20 years imprisonment under section 8(3) of the Sexual Offences Act. The High Court upheld the conviction and sentence. On second appeal, the Court of Appeal, relying on the Muruatetu case, held that mandatory minimum sentences were unconstitutional and reduced the sentence. The Supreme Court identified four issues: whether the Court of Appeal acted without jurisdiction; whether it violated stare decisis; whether minimum sentences under the Sexual Offences Act are unconstitutional; and whether courts have discretion to impose sentences below the statutory minimum. The Court held that the Court of Appeal acted without jurisdiction because the constitutionality issue was not raised before the High Court and severity of sentence is a matter of fact barred under section 361(1) of the Criminal Procedure Code. It further held that the Court of Appeal violated stare decisis by applying Muruatetu, which was confined to the mandatory death sentence for murder, to minimum sentences under the Sexual Offences Act, contrary to the Muruatetu Directions. The Court clarified that Muruatetu did not invalidate minimum sentences in any other statute. On the substantive issues, the Court declined to make a declaration on constitutionality, holding that such a determination requires a properly filed case fully argued from the High Court. The Court set aside the Court of Appeal judgment, reinstated the 20-year sentence, and ordered no costs.

Questions the Court framed

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The issues the Court set itself to decide, in its own words.

  1. 1.Whether the learned Judges of the Court of Appeal acted ultra vires and without jurisdiction by assuming original jurisdiction on constitutional matters not raised at the High Court
  2. 2.Whether in departing from the decision in Muruatetu & another v Republic, SC Petition 15 & 16 of 2015) [2021] KESC 31 (KLR) (the Muruatetu Directions), the Court of Appeal violated the principle of stare decisis
  3. 3.Whether minimum sentences as prescribed in the Sexual Offences Act are unconstitutional
  4. 4.Whether courts have discretion to impose sentences below the minimum mandatory sentences as prescribed by the Sexual Offences Act

Key legal issues

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01

Whether the Court of Appeal acted ultra vires by determining the constitutionality of mandatory minimum sentences when the issue was not raised at the High Court.

Holding

The Court of Appeal acted without jurisdiction because the issue of constitutionality of the sentence was not raised before the High Court and was raised for the first time on appeal before the Court of Appeal.

Reasoning

The Supreme Court found that the respondent's grounds of appeal before the Court of Appeal complained only that the sentence was harsh and excessive, not that it was unconstitutional. The constitutionality issue was introduced only through submissions. Under article 164(3) of the Constitution, the Court of Appeal's jurisdiction is limited to appeals from the High Court, and the High Court had not addressed the constitutional question. Additionally, section 361(1) of the Criminal Procedure Code bars the Court of Appeal from hearing matters of fact on a second appeal, and severity of sentence is a matter of fact. Therefore, the Court of Appeal had no jurisdiction to interfere with the sentence.

p. 16
02

Whether the Court of Appeal violated the principle of stare decisis by applying the Muruatetu decision to mandatory minimum sentences under the Sexual Offences Act.

Holding

The Court of Appeal violated the principle of stare decisis by applying the ratio decidendi of Muruatetu, which was confined to the mandatory death sentence for murder, to minimum sentences under the Sexual Offences Act, contrary to the clear Muruatetu Directions.

Reasoning

The Supreme Court held that its decision in Muruatetu specifically dealt with the mandatory death sentence under section 204 of the Penal Code and did not invalidate mandatory or minimum sentences in any other statute. The Muruatetu Directions explicitly stated that the decision could not be applied to other offences. The Court of Appeal's blanket application conflated mandatory sentences (which leave no discretion) with minimum sentences (which set a floor). By failing to follow the binding precedent, the Court of Appeal offended article 163(7) of the Constitution.

p. 20
03

Whether minimum sentences as prescribed in the Sexual Offences Act are unconstitutional.

Holding

The Supreme Court did not make a declaration on the constitutionality of minimum sentences under the Sexual Offences Act, holding that such a determination requires a properly filed case, fully argued before the High Court and escalated through the appropriate channels.

Reasoning

The Court found that the Court of Appeal's declaration of unconstitutionality was ambiguous and lacked specificity, failing to identify which provision of the Sexual Offences Act was unconstitutional. The Supreme Court reiterated that a declaration of unconstitutionality must be based on a specific plea, precise to a section or sections of a definite statute, and must be properly filed and fully argued before the High Court first. The Court declined to make such a declaration in this appeal because the issue was not properly raised and litigated from the trial court level.

p. 22
04

Whether courts have discretion to impose sentences below the minimum mandatory sentences prescribed by the Sexual Offences Act.

Holding

Courts do not have discretion to impose sentences below the minimum prescribed by the Sexual Offences Act unless the provision is declared unconstitutional through a properly filed and argued case.

Reasoning

The Supreme Court held that Parliament sets the parameters of sentencing for each crime, and the Judiciary's role is to adjudicate based on those provisions. Striking down a sentence requires a declaration of unconstitutionality based on sound principles and clear guidelines. Until such a declaration is made, the minimum sentence remains binding. The Court of Appeal erred by reducing the sentence below the statutory minimum without a proper constitutional challenge having been mounted.

p. 22

Legal principles established

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  • This Court of Appeal cannot hear appeals on sentence severity, which is a matter of fact, not law.
  • Constitutional challenges to mandatory or minimum sentences must be specifically raised at the High Court first.
  • The Muruatetu ruling applies only to the mandatory death sentence for murder, not to other mandatory or minimum sentences.
  • Supreme Court precedents are binding on all other courts in Kenya under Article 163(7) of the Constitution.
  • Minimum sentences in the Sexual Offences Act remain valid until a proper constitutional challenge succeeds through all court levels.

Court orders

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  1. 1.The petition of appeal is allowed to the extent of setting aside the Judgment of the Court of Appeal in Nyeri in Criminal Appeal No 84 of 2015 Joshua Gichuki Mwangi v Republic delivered on October 7, 2022.
  2. 2.The respondent, Joshua Gichuki Mwangi, should complete his 20-year sentence from the date of imposition by the trial court.
  3. 3.There shall be no order as to costs.

The bench

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One judgment of the whole court — no separate or dissenting opinions.

Martha Karambu Koome
M. K. KoomeCJ
Currently serving
majority

Wrote the judgment

Mohammed Khadhar Ibrahim
majority
Smokin Charles Wanjala
S. C. WanjalaSCJ
Currently serving
majority
Njoki Susanna Ndungu
Njoki NdunguSCJ
Currently serving
majority
Isaac Lenaola
I. LenaolaSCJ
Currently serving
majority
On appeal from
Court of Appeal at Nyeri
Criminal Appeal No 84 of 2015
Jurisdiction invoked
Article 163(4)(b) of the Constitution

Quotable passages

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Verbatim from the judgment, each located to the page it appears on in the official PDF — so these can be cited and checked directly.

The petition of appeal is allowed to the extent of setting aside the Judgment of the Court of Appeal in Nyeri in Criminal Appeal No 84 of 2015 Joshua Gichuki Mwangi v Republic delivered on October 7, 2022.
p. 23 Final Orders - Appeal Allowed
The respondent, Joshua Gichuki Mwangi, should complete his 20-year sentence from the date of imposition by the trial court.
p. 5 Final Orders - Sentence Reinstated
There shall be no order as to costs.
p. 5 Final Orders - Costs
We therefore reiterate that, this court's decision in Muruatetu, did not invalidate mandatory sentences or minimum sentences in the Penal Code, the Sexual Offences Act or any other statute.
p. 19 Scope of Muruatetu Decision
It holds that the precedents set by this court are binding on all other courts in the land.
p. 20 Stare Decisis under Article 163(7)
This clear and uncontested position lends credence to the argument by the appellant that the Court of Appeal heard and determined the present matter without jurisdiction, regarding the unconstitutionality of the sentence meted against the respondent, because the High Court did not in any way address the issue that the appellate court ultimately focused its judgment on.
p. 16 Court of Appeal Acting Without Jurisdiction
The proper procedure before reaching such a manifestly far-reaching finding would have been for there to have been a specific plea for unconstitutionality raised before the appropriate court.
p. 4 Procedure for Declaring Unconstitutionality

Key timeline

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2024
Supreme Court allows appeal, setting aside Court of Appeal decision and reinstating original 20-year sentence.
2022-10-07
Court of Appeal reduced sentence, citing unconstitutionality of mandatory minimum sentences under the Sexual Offences Act.
2015
High Court upheld trial court's 20-year sentence for defilement.
Trial court
Joshua Gichuki Mwangi convicted and sentenced to 20 years for defilement.

Practical implications

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For lawyers

Challenge minimum sentences properly

Do not raise constitutional arguments for the first time on appeal. File a specific petition at the High Court identifying the exact statutory provision challenged. Ensure full argument and escalation through proper channels. The Supreme Court will reject appeals that circumvent this procedure.

For businesses

Sentencing law remains stable

Businesses involved in sectors like hospitality or security should note that minimum sentences for sexual offences under the Sexual Offences Act are still enforceable. Courts cannot reduce these sentences without a prior constitutional declaration. Train staff accordingly on compliance with current legal penalties.

For individuals

Know your sentence rights

If convicted under the Sexual Offences Act, the minimum sentence set by law applies unless a specific constitutional challenge has succeeded. You cannot argue for a lower sentence based on the Muruatetu case alone. For advice on your specific case, consult a lawyer to explore proper legal avenues.

Frequently asked questions

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What did the Supreme Court decide in Republic v Joshua Gichuki Mwangi Kenya?+

The Supreme Court ruled that minimum sentences under the Sexual Offences Act are still valid. The Court of Appeal cannot reduce them without a proper constitutional challenge filed at the High Court first. Joshua Gichuki Mwangi must serve his full 20-year sentence for defilement.

Does the Muruatetu case apply to defilement sentences in Kenya?+

No. The Supreme Court clarified that Muruatetu only applies to the mandatory death sentence for murder. It does not allow courts to reduce minimum sentences in the Sexual Offences Act or other laws. Courts must follow the existing minimum sentences unless a specific constitutional case is won.

Can the Court of Appeal reduce a sentence it thinks is too harsh in Kenya?+

No, not on a second appeal. Section 361(1) of the Criminal Procedure Code bars the Court of Appeal from hearing matters about sentence severity, which is considered a matter of fact. The Court of Appeal can only hear legal issues on a second appeal.

How can a minimum sentence be challenged in Kenya now?+

A specific constitutional petition must be filed at the High Court, identifying the exact provision being challenged. The case must be fully argued and decided there. Only then can it be appealed to the Court of Appeal and Supreme Court. You cannot raise new constitutional arguments for the first time at the Court of Appeal.

Later judgments citing this (25)

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Judgments in the corpus that rely on this one. Where the Court said how it treated the authority, that is shown.

Cite this brief

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Cite this brief

Caselaw, "Republic v Mwangi; Initiative for Strategic Litigation in Africa (ISLA) & 3 others (Amicus Curiae)", Case Analysis (2024). Petition E018 of 2023. Source: https://new.kenyalaw.orghttps://new.kenyalaw.org/akn/ke/judgment/kesc/2024/34/eng@2024-07-12

Suggested citation format for research notes or client memos. Always verify the original judgment before relying on any point.