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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Thus, in considering and ascribing probative values to the evidence of witnesses, a Court is under duty to appraise it to see whether they are admissible, cogent, credible and probable. Thus, in the discharge of this onerous but very essential duty, a Court will be wary of crediting any witness who has either been so discredited or his so inconsistent on material facts in contention between the parties. It is for this reason that it is settled law that no witness who has given materially inconsistent evidence on oath is entitled to the honour of credibility and such a witness does not deserve to be treated as a truthful witness. See Ezemba v. Ibeneme (2009) 14 NWLR (Pt. 789) 623.
— B.A. Georgewill JCA. Stanbic IBTC Bank Plc V. Longterm Global Capital Limited & Ors. (CA/L/427/2016, 9 Mar 2018)
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
This court has stated in a legion of cases that where the evidence of an accused person is the only witness of an event, any other evidence given by another person not being an eye witness to that particular event will be hearsay or speculative. I commend the decision of this court in Ahmed v. State (1999) 7 NWLR (Pt. 612) 641 at 675 Belgore, JSC while allowing the appeal stated as follows: “In a situation where only the evidence of the accused person as to the actual stabbing is the only eye-witness account, he is either believed or there is no other evidence to believe.” Also in Bassey v. State (2019) 18 NWLR (Pt. 1103) 160 at page 166, para. F, Abba Aji, JSC while allowing the appeal stated as follows: “the testimony of appellant appears to me very striking and believable since there was no eye witness to the crime except the story of the appellant herein. His evidence seems consistent and correlated.”
Enobong v. The State (2022) – SC/CR/249/2020
Photographs taken of the deceased’s corpse are secondary evidence. They become admissible only when the negative is also tendered and their inadmissibility has nothing to do with the maker or photographer. However in this age of digital photography where the negatives are stored electronically, it becomes necessary for the photographer to be called to testify. — K.B. Aka’ahs, JSC. Mati Musa v The State (2019) – SC.902/2014
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
A tainted witness falls into one or both of the two categories hereunder listed: (1) A witness who is an accomplice in the crime charged. (2) A witness who, by the evidence he gives, may and could be regarded as having some purpose of his own to serve. Rasheed Olaiya v. The State (2010) Vol. 180 LRCN 1-197 p.34; The State v. Dominic Okoro & Ors (1974) 2 SC 73 at 82; Ishola v. The State (1978) 9-10 SC 73 at 100 .
— N.S. Ngwuta, JSC. Odogwu v State (2013) – SC.122/2009
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