The issue of jurisdiction is fundamental and the law is trite that it can be raised by a party at any stage of courts’ proceedings, even at the level of the Supreme Ccourt. See Francis Durwode v. State 2000 15 NWLR part 691 page 467, Otukpo v. John 2000 8 NWLR part 669 page 507. It is however ideal that it be raised at the earliest stage of proceedings to avoid unnecessary waste of time, which the defendant has done in the instant case.
— A.M. Mukhtar, JSC. Adetona & Ors. v Igele (2011) – SC.237/2005