In Okpa v. Irek & Anor. [2012] LPELR-8033 (CA) held thus: This court has consistently held that a witness statement on oath is different from affidavit evidence. An affidavit is a statement of fact which the maker or deponent swears to be true to the best of his knowledge. It is a court Process in writing deposing to facts within the knowledge of the deponent. It is documentary evidence which the court can admit in the absence of any unchallenged evidence. Akpokeniovo v. Agas [2004] 10 NWLR (Pt. 881) 394. On the contrary a witness statement is not evidence. It only becomes evidence after the witness is sworn in court and adopts his witness statement. At this stage at best it becomes evidence in chief. It is thereafter subjected to cross examination after which it becomes evidence to be used by the Court. If the opponent fails to cross examine the witness, it is taken as the true situation of facts contained therein.
AVERMENTS IN AFFIDAVIT NOT CHALLENGED ARE DEEMED ADMITTED
These averments were not challenged or denied by the Appellant. No further affidavit was filed by the Appellant to deny that it ever agreed to submit to the Jurisdiction of the English Court. The Appellant did not challenge the Judgment by way of appeal nor did it deny the averments in the Counter Affidavits. I therefore agree with the submission of learned Senior Counsel for the Respondent that where facts in an affidavit are not challenged, they are deemed admitted.
— J.O. Bada, JCA. Conoil v Vitol (2011) – CA/A/213/2010