The standard of proof required in a murder case as in all criminal cases is proof beyond reasonable doubt. The onus of proof is on the prosecution and not on the defence. It is after the prosecution has produced necessary evidence to establish its case that the burden shifts unto the defence if he has any contradicting evidence to call his own witness to establish such evidence.
– OMOBONIKE IGE, J.C.A. Etumionu v. AG Delta State (1994)