WHO IS A TAINTED WITNESS?

PROSECUTION ONLY OBLIGED TO CALL VITAL WITNESS

No doubt, the prosecution is only obliged to call witnesses whose evidence is vital to the determination of the case for the prosecution and whose evidence would settle vital points of facts one way or the other to remove any element of doubt in respect of the guilt of the Defendant from the case of the prosecution.

– H.M. Ogunwumiju, JSC. State v. Ibrahim (2021) – SC.200/2016

COURT OF LAW CAN CONVICT ON THE EVIDENCE OF ONE WITNESS

Accordingly, in arriving at a conviction in criminal cases, the court is concerned with whether or not there is sufficient credible evidence of probative value and not the number of witnesses called on an issue. See: Commissioner of Police v. Daniel Kwashie (1953) 14 WACA 319. Where a single witness called by the prosecution is neither an accomplice nor a tainted witness, a court of law is entitled to convict mainly on his credible evidence where his testimony did not by law require corroboration. Once the court is satisfied with the cogency, high quality and credibility of the evidence of a witness and accepts it, conviction based on such evidence should not be interfered with unless such evidence by law requires corroboration. So, in the Daniel Kwashie case, the learned magistrate convicted the appellant on the evidence of one witness. On appeal to the High Court, the learned Judge found that although, corroboration was not required by law, a court was generally reluctant to convict on the evidence of a single witness and proceeded to allow the appeal. On further appeal to the West African Court of Appeal, the appellate judge was reversed and his decision was set aside on the ground that there was sufficient evidence before the learned magistrate on which he based his conviction. It was further held that since the learned magistrate believed the witness and there was no imputation that the sole witness was an accomplice or a tainted witness, it was an error to reverse his decision and the conviction was restored.

— Iguh, JSC. Oguonzee v State (1998) – SC.131/97

A CASE IS PROVED BY THE QUALITY OF WITNESSES, NOT QUANTITY

As the Supreme Court per Tobi, JSC puts it in Nigerian Army v. Major Jacob Iyela [2008] LPELR-2014 (SC); [2008] 7-12 SC 35; [2008] 18 NWLR (Pt. 1118) 115: A case is not necessarily proved by the quantity of witnesses. A case is proved by the quality of the witnesses in the light of either inculpatory or exculpatory evidence, as the case may be. And so, it does not necessarily follow that because the respondent called four witnesses, they rebutted the evidence of the two witnesses of the appellant.

PROSECUTION MUST NOT CALL ALL WITNESSES, SUFFICIENT WITNESSES ARE ENOUGH

Secondly, it is a well established principle of law that it is not necessary for a person on whom the onus of proof lies, even in criminal cases, to call every available piece of evidence in order to discharge that burden. It is enough if evidence is tendered sufficient to discharge the onus which the law lays upon the prosecution. See: Francis Odili v. The State (1977) 4SC 1 or (1977) 11 NSCC 154 at 158 and Joshua Alonge v.I.G. of Police (1959) SCNLR 516; (1959) 4 FSC 203 or (1959) 1 NSCC 169. In the Francis Odili case, the appellant was convicted and sentenced to death. Following his arrest, the appellant was identified at an identification parade by one of the two Rev. Sisters they violently robbed with arms. At the trial, he pleaded alibi. The learned counsel contended inter alia that the evidence of identification was unreliable and that the prosecution failed to call two other eye witnesses to the incident. On appeal, this court per Alexander C.J.N. stated as follows:- “Counsel’s last submission was that the 2 night guards should have been called as witnesses as they were present throughout………………..The tribunal, in its judgment, pointed out that the defence had an equal opportunity to call the night guards if they considered that the evidence of the night, guards would be favourable to them. The tribunal found no merit in this submission and we unhesitatingly agree. The prosecution is not required to call very available piece of evidence to prove its case. It is enough if sufficient evidence is called to discharge the onus of proof beyond reasonable doubt.”

— Iguh, JSC. Oguonzee v State (1998) – SC.131/97

HOST OF WITNESSES IS NOT NEEDED FOR SUCCEEDING

In OCHIBA v. THE STATE (2011) LPELR 8245 (SC) where it was held as follows: “I need to say it that it is settled Law that the prosecution was not obliged to call a host of witnesses in order to discharge the burden placed on it to prove the charge against the appellant beyond reasonable doubt as dictated by section 138(1) of the Evidence Act. A sole witness like P.w.1, who has given credible and clear evidence which was believed by the trial Judge, will suffice. See OBUE V THE STATE (1976) 2 SC 141; SADAM v THE STATE [2010] 12 SC (PT.1) 73 at 87-88; AKPAN v THE STATE [1991] 3 NWLR (PT 182) 695”.