The Supreme Court in Omega Bank (Nig) Plc v. O.B.C. Ltd. [2005] 8 NWLR (Part 928) 547 at 587 Paragraphs C – D per Tobi, JSC (as he then was) the Apex Court held inter alia that: “… It is my view that where a document is not signed, it may not be admitted in evidence. Even if it is admitted in evidence, the Court should not attach any probative value to it. This is because a document which is not signed has no origin in terms of its maker….at page 582 Paragraph A, His Lordship, Tobi, JSC of blessed memory further emphasized that:” A document which is not signed does not have any efficacy in law. As held in the cases examined, the document is worthless and a worthless document cannot be efficacious…”
WRONGFUL ADMITTAL OF EVIDENCE MUST LEAD TO MISCARRIAGE OF JUSTICE
The law is equally well settled that where inadmissible evidence is admitted, it behooves the trial Court to expunge such evidence from the record and consider if there is any viable evidence upon which the charge could be sustained. In essence, the wrongful admission of an evidence ought not to totally affect the decision of the Court unless the use of such evidence has resulted in occasioning a miscarriage of justice.
– Saulawa, JSC. Makanjuola v. State (2021)