COURT CAN PREFER ONE EXPERT WITNESS TO ANOTHER

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

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.

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

RELATIONSHIP BY BLOOD CANNOT DISQUALIFY A WITNESS AS BEING A TAINTED WITNESS

The fact that he (PW 4) is a brother to the deceased with but more, cannot in my view make or turn him into a tainted or biased witness. He was not shown to have been an accomplice in the commission of the offence nor that he had any interest or purpose of his own to serve as such witness. Relationship by blood without any more cannot tantamount to a disqualification from being a prosecution witness, and I am not aware of any of our laws which provide as such. Consequently, the evidence of PW 4 in my view requires no corroboration. Ishola v. The State (1978) 9 & 10 SC81; Onafowokan v. The State (1986) 2 NWLR (Pt. 23) 496; Arehia & Anor v. The State (1982) 4SC7 8; Hausa v. The State (1992) 1 NWLR (Pc 219) 600.

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