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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The prosecution does not have the obligation to put forward two versions of one incident. See ONUBOGU v. THE STATE (supra); BOY MUKA v. THE STATE (supra); ALFRED ONYEMENA v. THE STATE (1974) ALL NLR 522. Once the prosecution can prove their allegation beyond reasonable doubt with the witnesses they have screened and selected, they would have discharged the burden of proof cast on them by law. They owe neither the Court nor the accused the duty to call a host of witnesses, or a particular witness.
— E. Eko, JSC. Galadima v. State (2017) – SC.70/2013
The law is trite that unless where the law prescribes otherwise, there can be a conviction based on the evidence of a sole witness. Such evidence of a sole witness must be cogent, strong, credible and reliable before a Court can rely to found a conviction. See Oduneye v The State (2001) 2 NWLR (pt 697) 311, Abogede v State (1996) 5 NWLR (pt 449) 279 at 280, Ighalo v The State (2016) LPELR – 40840 (SC). 27 Ordinarily, the credibility of evidence does not depend on the number of witnesses who testify on a particular issue, but it depends on whether the evidence of a single witness is believable and accepted by the Court and if so believed by the Court, then it is sufficient to ground a conviction. SeeAli v The State (1988) 1 NWLR (pt 68) 1, Lase v The State (2017) LPELR – 42468 (SC), Abogede v The State (1996) 4 SCNJ 227.
— J.I. Okoro, JSC. Chibuike Ofordike V. The State (SC.695/2016, 2019)
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.
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”.
It is trite law that there is no rule which imposes an obligation on the prosecution to call a host of witnesses; all the prosecution need do is to call enough material witnesses to prove its case, and in so doing it has a discretion in the matter. See: Samuel Adaje v. The State (1979) 6-9 SC 18 at 28. Bako Bahor v. Yaburi NA Police (1970) NMLR 107 at 112; E.O. Okonofua & Anor v. The State (1981) 6-7 SC 1 at 18. See also section 179(1) of the Evidence Act. What is more it is the law that if a witness is not called by the prosecution, the defence is at liberty to do so. —
Onu JSC. Oguonzee v State (1998) – SC.131/97
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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