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
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Bello, JSC, in AJIDE v. KELANI (1985) 3 NWLR (pt.12) 248 at 200 – 261, (1985) 16 NSCC (pt.2) 1298 at 1309, stated the options thus – “He may cross-examine the witness on the writing and if he is satisfied with the answer given by the witness or if he does not intend to pursue the matter further, he is not required to show the writing to the witness or to prove the writing. But if the cross-examiner intends to contradict the witness by the writing, then he must show the writing to witness and call his attention to those part of the writing which are to be used for the purpose of contradicting the witness. It is only after this condition has been complied with that the writing can be admitted in evidence.”
No law says a relation could not give evidence of what he knew, simply because he is related to the party in whose favour he is to give the evidence.All that is necessary, in such situation, is for the Court to warn itself of the danger of the likelihood of partisanship – see Idowu v. The State (2011) LPELR-3597 (CA) 69-70, D-B.
— O.O. Arowosegbe, J. Danjuma v Royal Salt Ltd. & Anor. (2020)
The question whether or not a witness is an accomplice is one of law not of fact and if, as here, the learned trial Judge erred in regarding P.W.(18) as an accomplice (to the crime of conspiracy) it is certainly open to an appellate court (and in this instance, the Federal Court of Appeal) to reverse the erroneous view of the learned trial Judge.
— Idigbe, JSC. Ishola v State (1978) – SC.8/1977
It is trite law that where there is conflict in the opinions of experts, it is the duty of the court to come to a conclusion in the case by resolving such a conflict and can do so by rejecting the opinion of one or the other such experts. See John Wilberforce Bamiro v. S.C.O.A. (1941) 7 WACA 150; R v. Godo (1975), 61 Cr App R.131; Ozigbo v. Police (1976) 1 NMLR 273, Laws and Practice Relating to Evidence in Nigeria by Aguda at p.115 Article 9-05.
— Edozie, JCA. British American v. Ekeoma & Anor. (1994) – CA/E/60/88
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.
Where the evidence of such a witness is otherwise credible and sufficiently of probative value to the charge, the fact of his relationship to the victim or that he has other personal interest of his own to serve is by itself not sufficient to reject his evidence. In law, causes are not lost on the basis that the witness/s is/are members of the same family, association or community. Even where the Court fails or omits to caution or warn itself on evidence that is true in fact and sufficient to ground a charge, the failure or omission would not weaken the validity of such evidence or be fatal to a conviction.
– M.L. Garba JCA. Odogwu v. Vivian (2009) – CA/PH/345/05
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