In ANI V THE STATE (2002) 10 NWLR PT 776 644, this Court had this to say; The burden on the accused to prove his insanity, however is merely as in civil cases that is to say on the balance of probability or the preponderance of evidence.
GUIDING PRINCIPLES IN ESTABLISHING INSANITY
In NWOYE IGWEZE ONYEKWE v. THE STATE (1988) LPELR 2732 (SC), this Court detailed some of the guiding principles in establishing insanity viz: 1. Evidence as to the past history of the accused. 2. Evidence as to his conduct immediately preceding the killing of the deceased. 3. Evidence from Prison Warders who had custody of...