The three appellants were convicted of assault in contravention of section 89 of the Criminal Law Code. The incident occurred on 27 November 2013 at Ingutsheni Mental Hospital. The complainant, who had been admitted to the mental hospital for only a week due to mental illness, allegedly lost three front teeth during an altercation with the appellants. The appellants, who were presumably staff members at the hospital, explained that the complainant had become violent at lunch time and attacked the first appellant with clenched fists while yelling insults. They teamed up to subdue him and take him to the treatment room where a nurse was waiting to inject him with a tranquiliser. During the struggle, the complainant fell head first and sustained injuries. The only witnesses were the complainant (a mental patient) and his mother who did not actually witness the assault. The complainant testified in court on 28 March 2014.
1) The appeal is upheld. 2) The conviction and sentence of the court a quo are hereby set aside and substituted with the verdict that the appellants are hereby found not guilty and acquitted.
The binding legal principles established are: (1) A court cannot reject an accused person's explanation unless it is satisfied beyond reasonable doubt that the explanation is false, not merely that it is improbable (applying S v Kuiper 2009 (1) ZLR 113 (S) 118 C-E); (2) Evidence from a person who was suffering from mental illness at the time of the events they are testifying about cannot be relied upon by a court to convict or to reject an accused's explanation, particularly in light of section 246 of the Criminal Procedure and Evidence Act [Chapter 9:07] which disqualifies persons afflicted by mental disorder from giving evidence while so afflicted; (3) Where the only evidence contradicting an accused's explanation comes from a person who was mentally ill at the time of the events, the explanation cannot be rejected beyond reasonable doubt.
The court made the observation that while it had not been shown that the complainant was still afflicted by mental illness when testifying in court on 28 March 2014, it had also not been shown that he was not afflicted. This suggests that in future cases, where a witness has a history of mental illness, the prosecution should lead evidence establishing that the witness is mentally competent at the time of testifying, particularly where the witness was mentally ill at the time of the events being testified about.
This case is significant in Zimbabwean criminal law and evidence law for several reasons: (1) It reinforces the principle that courts must properly evaluate defences or explanations provided by accused persons and cannot reject them summarily without applying the appropriate legal test; (2) It clarifies the application of the principle from S v Kuiper regarding the standard for rejecting an accused's explanation - that it must be found to be false beyond reasonable doubt, not merely improbable; (3) It emphasizes the importance of section 246 of the Criminal Procedure and Evidence Act which disqualifies mentally disordered persons from giving evidence while afflicted; (4) It establishes that evidence from a person who was mentally ill at the time of the events they are testifying about is unreliable and cannot form the sole basis for rejecting an accused's explanation; (5) It demonstrates the importance of corroborating evidence in criminal cases, particularly where the credibility of witnesses is in question.