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
