Ariku v. Ajiwogbo (1962) All NLR (Pt. 4) 630, Ademola CJF (of blessed memory) delivering the judgment of the Supreme Court stated the law as follows:- “This court has frequently directed attention to the practice, now not uncommon of making use of evidence of a witness in another case as if it were evidence in the case on trial. As was pointed out in Alade v. Aborishade (1960) 5 FSC 167 at 171, this is only permissible under section 33 or 34 of the Evidence Act. Where a witness in a former case is giving evidence in a case in hand, his former evidence may be brought up in cross-examination to discredit him if he was lying, but evidence used for this purpose does not become evidence in the case in hand for any other purpose. There are also prerequisites to the making use of the former testimony of a witness; for example his attention must be called to the former case where such evidence was given and he would be reminded of what he had said on the occasion.”
WHERE EVIDENCE IS CONTRADICTING, ALL SHOULD BE REJECTED
It is well settled that where prosecution witnesses have given conflicting conversions of material facts in issue that the trial Judge before whom such evidence as led must make specific findings on the point and in so doing must give reasons rejecting one version and accepting the other. Unless this is done it will be very unsafe for the court to rely on any of the incidence before it. The proper course in the circumstance is to reject both versions of the evidence as unreliable and unsafe for the purpose of determining the material issue before the court. See: Onubogu v. The State (1974) 9 S.C. 1; Albert Ikem v. The State (1985) WLR (Pt. 2) 378.
— Opene JCA. JIMOH ABDULLAHI & Ors. v THE STATE (1995) – CA/K/180/C/94