Onsase v Republic (Criminal Appeal E104 of 2021) [2026] KECA 729 (KLR)
The bottom line
#Kenya's Court of Appeal upheld a man's murder conviction and death sentence for killing three children, confirming that circumstantial evidence and phone location data can prove guilt.
What this practically means
#Executive summary
#Questions the Court framed
#The issues the Court set itself to decide, in its own words.
- 1.Whether the circumstantial evidence and the 'last seen' doctrine established that the appellant committed the unlawful acts causing the deaths of the three deceased children
- 2.Whether the prosecution discharged its burden of proving the ingredients of murder beyond reasonable doubt, including malice aforethought
- 3.Whether the appellant's defence, including denial of ownership of the mobile phone used to place him at the scene, cast doubt on the prosecution case
- 4.Whether the sentence of death was proper in the circumstances, given that the mandatory death penalty has been declared unconstitutional
Key legal issues
#Whether the circumstantial evidence satisfied the settled tests for a conviction
Yes. The testimony of PW6 and PW1, the mobile phone location data placing the appellant with the children and later near the scene and along the river, and his false denials formed a complete and unbroken chain pointing to the appellant alone; the Court would not interfere with those findings.
The Court applied the three-pronged test from Abanga alias Onyango v Republic: circumstances must be cogently established, have a definite tendency unerringly pointing to guilt, and cumulatively form a chain so complete that within all human probability the crime was committed by the accused and none else. It found the prosecution witnesses credible and unshaken in cross-examination, and the phone data corroborative of PW6's account, leaving no coexisting circumstance weakening the inference of guilt.
Whether the 'last seen' doctrine shifted any burden to the appellant
Having been proved to be the last person seen with the deceased children, the appellant was bound to offer a reasonable and satisfactory explanation; his denial of ownership of the mobile phone and claim to have been at home did not discharge that duty.
Relying on section 111(1) of the Evidence Act and the Nderitu line of authority, the Court held that facts peculiarly within the accused's knowledge must be explained by him. The appellant's attempt to distance himself from the phone and his bare denial of being with the children did not rebut the strong presumption arising from his being last seen with them, permitting an inference of responsibility for the deaths.
Whether malice aforethought was established
Yes. The manner of killing – strangulation and oral administration of the toxic pesticide diazinon – together with concealment of the bodies, demonstrated an intention to cause death within section 206 of the Penal Code.
The Court invoked section 206 of the Penal Code, which deems malice aforethought established by, inter alia, an intention to cause death or grievous harm or knowledge that the act will probably cause death. The post mortem evidence showed strangulation and toxicology showed diazinon, consumed orally; the Court inferred the appellant administered it, then concealed the bodies in River Nzoia, conduct it found consistent only with an intention that the children die.
Whether the death sentence was properly imposed
Yes. Although the mandatory death penalty is unconstitutional, the murder of three innocent children by strangulation and poisoning, followed by concealment, constituted aggravating circumstances justifying the death penalty in the trial court's discretion.
The Court acknowledged the Supreme Court's decision that the mandatory nature of the death penalty for murder fetters judicial discretion and is unconstitutional, but stressed that the sentence itself remains available where circumstances dictate. It identified the heinous and cruel killing of children on their way to church, and the concealment of the bodies, as aggravating factors that made the discretionary imposition of death appropriate.
Legal principles established
#- A first appellate court must revisit the evidence afresh, analyse and evaluate it and reach its own independent conclusion, while making allowance for the trial court's advantage of observing witness demeanour.
- Circumstantial evidence can ground a conviction only where the circumstances are cogently established, point unerringly to guilt, form a complete chain excluding any other reasonable inference, and are not weakened by coexisting circumstances.
- Under the 'last seen' doctrine, where an accused is proved to have been the last person seen with the deceased before death, he bears a statutory duty under section 111(1) of the Evidence Act to offer a reasonable explanation of the deceased's fate; failure allows the drawing of an adverse inference.
- Although the mandatory death penalty for murder was declared unconstitutional, the death penalty itself remains available where circumstances of the offence justify it.
Court orders
#- 1.Appeal dismissed in its entirety
- 2.Conviction on all three counts of murder upheld
- 3.Sentence of death on each count affirmed
The bench
#One judgment of the whole court — no separate or dissenting opinions.
- On appeal from
- High Court of Kenya at Eldoret
- HCCRC No. 31 of 2017
- Jurisdiction invoked
- First appeal to the Court of Appeal from a conviction and sentence of the High Court exercising original criminal jurisdiction (Penal Code murder charge; Constitution and Court of Appeal jurisdiction over first appeals on fact and law)
Relief refused
#Quashing of conviction and setting aside of the death sentence
The Court found the circumstantial evidence formed a complete chain pointing to the appellant alone and that aggravating circumstances justified the death penalty
Costs
No costs order made; this is a criminal appeal and the judgment makes no order as to costs.
Quotable passages
#Verbatim from the judgment, each located to the page it appears on in the official PDF — so these can be cited and checked directly.
Accordingly, we come to the conclusion that the present appeal lacks merit and dismiss it in its entirety. We uphold the conviction and afirm the sentence.
the first appellate court has the duty to revisit the evidence tendered before the trial court, afresh analyse it, evaluate it and come to its own independent conclusion on the matter
the circumstances taken cumulatively, should form a chain so complete that there is no escape from the conclusion that within all human probability the crime was committed by the accused and none else
where an accused is proved to have been the last person seen with the deceased before death, he bears a duty to ofier a reasonable and satisfactory explanation as to how the deceased met his death
Indeed, if there is a case where the death penalty is deserved, this is one of them.
Issues in the judgment
#Internal contradiction on the date the appellant led police to the scene: PW12 testified 29th March 2017 in one passage but 29th May 2017 is recorded elsewhere.
Chronological anomaly: the appeal was heard on 16th February 2026 on written submissions, yet the respondent's submissions are recorded as dated 21st June 2024, and the Court cites Nderitu vs. Republic [2026] KECA 339 (KLR) whose date relative to this judgment is not verifiable from the text.
Key timeline
#Practical implications
#Frequently asked questions
#Cite this brief
#Cite this brief
Caselaw, "Onsase v Republic (Criminal Appeal E104 of 2021) [2026] KECA 729 (KLR)", Case Analysis (2026). Criminal Appeal (Eldoret) – appeal against conviction and sentence in Eldoret High Court HCCRC No. 31 of 2017. Source: https://new.kenyalaw.org/akn/ke/judgment/keca/2026/729/eng@2026-04-10
Suggested citation format for research notes or client memos. Always verify the original judgment before relying on any point.