Bob Ayub “alias” Edward Gabriel Mbwana “alias” Robert Mandiga v Republic
The bottom line
#Kenya's Court of Appeal threw out a murder conviction because the trial judge mishandled assessors and judge replacement, but ordered a fresh trial rather than release.
What this practically means
#Executive summary
#Key legal issues
#Continuation of trial with assessors after mid-trial repeal of the assessor provisions
The trial was vitiated because, having commenced with the aid of three assessors when the assessor provisions were still in force, the court neither proceeded with, summed up to, nor recorded the opinions of the assessors; the transitional provision in section 23(3)(e) of the Interpretation and General Provisions Act required the trial to continue with assessors to the end.
Sections 262 and 263 of the Criminal Procedure Code as applicable at the material time mandatorily required all High Court trials to be with the aid of three assessors. The record was silent on what became of the assessors after selection: no summing up, no recorded opinions, no mention in the judgment. Even if part of the hearing occurred after the repeal by Act No. 7 of 2007, section 23(3)(e) of the Interpretation and General Provisions Act preserved the requirement that the trial continue with assessors.
Section 200 compliance on transfer of a part-heard trial to a succeeding judge
Musinga J's failure to inform the appellant of his right under section 200(3) to demand that any witness be resummoned and reheard, as applied to the High Court by section 201(2), infringed the fair-trial guarantee and contributed to the nullity.
Section 201(2) applies section 200 mutatis mutandis to High Court trials. The record contained no evidence that the succeeding judge explained the appellant's right to have witnesses reheard. The State's argument that the appellant was represented by counsel was rejected: the mandatory statutory duty runs to the accused himself, and a bare assertion of compliance in the judgment is hollow without record evidence.
Wrong statutory provision invoked for putting the accused on his defence
The judge's invocation of section 211 (applicable to subordinate courts) instead of section 306(2) of the Criminal Procedure Code was a curable irregularity causing no prejudice.
Section 211 governs subordinate-court trials; the correct provision for the High Court is section 306(2). However, the manner of compliance with both is the same and the message to the accused was in any event conveyed, so the error was minor and curable under section 382 of the Criminal Procedure Code.
Whether a retrial should be ordered following the nullity
A retrial was ordered: the offence involved loss of human life, the witnesses remained available, only about a year had elapsed, and a proper retrial could be mounted in the interests of justice and of the appellant.
Applying the Muiruri v Republic principles, the court weighed the illegality in the original trial against the interests of justice. Given the gravity of the offence, the availability of witnesses, and the short time elapsed since conviction, the balance favoured a retrial before a judge other than Musinga J, under the post-repeal law without assessors.
Legal principles established
#- Where a criminal trial began with the aid of assessors before their repeal, the trial must continue with the aid of assessors to the end under section 23(3)(e) of the Interpretation and General Provisions Act
- A trial which begins with the prescribed number of assessors and continues with less than that number, without the reasons required under section 298 of the Criminal Procedure Code being recorded, is unlawful and a fundamental departure infringing the right to a fair trial
- A succeeding judge in the High Court taking over a partly heard criminal trial must comply with section 200 of the Criminal Procedure Code (as applied by section 201(2)), including informing the accused of the right to demand that any witness be resummoned and reheard; representation by an advocate does not discharge that duty
- Retrial principles: a retrial is ordered only where the interests of justice require it and it is unlikely to cause injustice to the appellant, considering the defects in the original trial, elapsed time, and whether the mistakes were entirely of the prosecution's making
Court orders
#- 1.The appeal is allowed
- 2.The conviction and sentence of death imposed upon the appellant are set aside
- 3.The appellant shall be retried by any Judge of competent jurisdiction other than Musinga J
- 4.The retrial shall proceed under the law after the repeal of the sections relating to assessors by Act No. 7 of 2007
- 5.The appellant to be remanded in police custody and produced before the trial court within 14 days of the judgment
- 6.The retrial to be concluded expeditiously
- On appeal from
- High Court of Kenya at Kisii
- H.C.CR.C. No. 57 of 2005
- Jurisdiction invoked
- First appeal to the Court of Appeal against conviction and sentence in a murder trial (Criminal Procedure Code appellate provisions)
Key timeline
#Practical implications
#Frequently asked questions
#Later judgments citing this (2)
#Judgments in the corpus that rely on this one. Where the Court said how it treated the authority, that is shown.
- Samuel Muhuri Wamboi v Republic[2026] KECA 542 (KLR)13 Mar 2026
- Wilfred Jack Ouma Alias Jaa v Republic[2015] KECA 87 (KLR)17 Dec 2015
Cite this brief
#Cite this brief
Caselaw, "Bob Ayub “alias” Edward Gabriel Mbwana “alias” Robert Mandiga v Republic", Case Analysis (2010). Criminal Appeal 106 of 2009. Source: https://new.kenyalaw.org/akn/ke/judgment/keca/2010/321/eng@2010-04-30
Suggested citation format for research notes or client memos. Always verify the original judgment before relying on any point.