DEMEANOUR OF WITNESSES VIS-A-VIS DOCUMENTARY EVIDENCE

WHO IS A TAINTED WITNESS?

However, and for whatever it is worth, the law is settled that a tainted witness is a person who is either an accomplice or who on the evidence may be regarded as having some purpose of his/her own to serve – see R vs Enahoro (1964) NMLR 65; Ifejirika vs The State (1999) 3 NWLR (pt. 593) 59; Ogunlana vs The State (1995) 5 NWLR (Pt. 395) 266.

— W.S.N. Onnoghen, JSC. Moses v State [2006] – S.C.308/2002

WHERE PROSECUTION WITNESS CONTRADICTS ONE ANOTHER

Onubogu and Anor v. The State (1974) 9 S.C. 1, 20: the Supreme Court opined that where in a criminal case, one witness called by the prosecution’ contradicts another prosecution witness on a material point, the prosecution ought to lay some foundation, such as showing that a witness was hostile, before they can ask the court to reject the testimony of one witness in preference for the evidence of the discredited witness. It is not competent for the prosecution to discredit one and accredit the other.

THE PROSECUTION NEED NOT CALL A HOST OF WITNESSES

There is no doubt that the defence is not to determine how many witnesses the prosecution will call to testify in Court. The State is at liberty to call only one witness or as many as it desires as long as the testimony of a sole witness is sufficient to establish the ingredients to the charge. See; Bayo Adelumola Vs. The State (1988) NWLR (pt.73)683; (1988) LPELR 119 (SC).

— O. Ariwoola, JSC. Galadima v. State (2017) – SC.70/2013

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

WHO IS A TAINTED WITNESS?

A tainted witness has been classified as one who is either an accomplice or by the evidence he gives, whether as a witness for the prosecution or defence, may and could be regarded as having some purpose of his own to serve. See: Ishola v. The State (1978) NSCC 499 at 509.

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