Rng v Republic
The bottom line
#Kenya's Court of Appeal confirmed a life sentence for incest, ruling that proof of a child victim's age does not require a birth certificate.
What this practically means
#Executive summary
#Key legal issues
#Scope of a second appeal under section 361 of the Criminal Procedure Code
The Court considers only issues of law and must not retry facts already determined by the trial court and reviewed on first appeal.
The Court invoked section 361 of the Criminal Procedure Code and Karani v Republic, adopting the Stephen M'Irungi formulation that a court confined to questions of law must accept the factual findings of lower courts unless on the evidence no reasonable tribunal could have reached that conclusion. The factual dispute about proof of age therefore did not open the door to retrial.
Whether the age of the child victim was adequately proved absent a birth certificate or age assessment report
Yes; the prosecution's evidence of the mother and medical evidence sufficed, and the settled jurisprudence on proof of age was not departed from.
Counsel for the appellant invited the Court to hold that only a birth certificate or medical/dental age assessment report could prove a child's age in a sexual offence case. The Court declined, noting the appellant cited no authority, that the matter is settled in progressive jurisprudence of this Court and the Supreme Court, and that age was never challenged at trial, making the argument an afterthought.
Whether the conviction for incest was safe notwithstanding reliance on the evidence of a child and alleged grudge between PW3 and the appellant
The conviction was safe; the trial magistrate directed herself on the child evidence, demeanour was observed, and the evidence was corroborated by PW2 and medical evidence.
The Court was not persuaded that the trial court failed to warn itself under section 127(1)(3) of the Evidence Act or that the grudge issue undermined the conviction. The prosecution case, including medical proof of penetration and the appellant's flight to Nairobi for almost a month, was not dislodged at trial or on first appeal, so no question of law arose warranting interference.
Legal principles established
#- A second appeal is confined to issues of law only; an appellate court whose right of appeal is confined to questions of law must accept findings of fact of the lower courts and not interfere unless no reasonable tribunal could have reached that conclusion on the evidence.
- Settled jurisprudence of the Court of Appeal and Supreme Court on how the age of a child victim in a sexual offence may be proved (including by the evidence of a parent and medical evidence) stands; a party cannot overturn it by mere invitation without sound basis.
- A ground of appeal not raised at trial or on first appeal, such as a challenge to proof of the victim's age, is an afterthought and will not be entertained on second appeal.
Court orders
#- 1.Appeal dismissed in its entirety
- 2.Conviction and sentence of life imprisonment imposed by the trial court, as upheld by the High Court, remain in force
- On appeal from
- High Court of Kenya at Nyeri
- Criminal Appeal No. 6 of 2015
- Jurisdiction invoked
- Section 361 of the Criminal Procedure Code (second appeal confined to matters of law)
Key timeline
#Practical implications
#Frequently asked questions
#Cite this brief
#Cite this brief
Caselaw, "Rng v Republic", Case Analysis (2026). Criminal Appeal (not individually numbered in judgment; appeal against High Court Criminal Appeal No. 6 of 2015). Source: https://new.kenyalaw.org/akn/ke/judgment/keca/2026/1315/eng@2026-07-03
Suggested citation format for research notes or client memos. Always verify the original judgment before relying on any point.