The State v Mthokozisi Ncube

On 31 March 2016, at approximately 1100 hours, the 28-year-old accused, a known mental patient, was at his father Zacheas Ncube's homestead in Mloyi village, Kezi. Earlier that morning at about 0700 hours, the deceased had instructed the accused to guard crops in the fields, which he refused to do. The accused left the homestead around 1100 hours but returned shortly thereafter. Upon his return, the accused struck his 74-year-old father on the head with a knobkerrie and a pounding log (pestle). The deceased collapsed and lost consciousness. He was taken to Maphisa District Hospital where he died upon arrival. The postmortem report by Dr Robert Trecu attributed the cause of death to severe brain damage, multiple skull bone fractures, and severe head trauma due to beating.

• Whether the accused committed the act constituting the offence of murder
• Whether the accused was mentally disordered at the time of committing the offence so as to have a complete defence in terms of section 248 of the Criminal Law [Codification and Reform] Act
• Whether a special verdict should be returned in terms of section 29(2) of the Mental Health Act

1. The accused person is hereby found not guilty by reason of insanity. 2. The accused person shall be returned to prison for transfer to a special institution for treatment.

Where an accused person is found to have committed the actus reus of an offence but, at the time of committing the act, was suffering from a mental disorder (such as schizophrenia and substance use disorder) to such an extent that he lacked the mental capacity to form the requisite mens rea, he is entitled to a complete defence in terms of section 248 of the Criminal Law [Codification and Reform] Act. In such circumstances, section 29(2) of the Mental Health Act requires the court to return a special verdict of not guilty by reason of insanity, provided the court is satisfied from the evidence, including medical evidence, that the accused was mentally disordered or intellectually handicapped at the time of the offence. Upon returning such a verdict, the court must order that the accused be returned to a special institution for treatment, particularly where the accused is deemed dangerous to society.

The court noted the accused's previous criminal history, including five crimes of indecent assault committed in 2012, which together with the present murder charge demonstrated a pattern of dangerous conduct linked to his mental illness. This observation underscored the need for the accused to be confined to a special institution for treatment rather than being released into society. The court also noted that while the accused was mentally disordered at the time of the offence, he was nevertheless fit to stand trial, demonstrating that fitness to stand trial and mental state at the time of the offence are distinct legal considerations that must be separately assessed.

This case demonstrates the application of Zimbabwe's Mental Health Act in criminal proceedings where the accused is found to be mentally disordered at the time of committing a serious offence. It illustrates the interface between criminal law and mental health law, showing how the courts balance the need for criminal accountability with the recognition that persons suffering from severe mental disorders lack the requisite mens rea for criminal liability. The case reinforces the protection afforded to mentally ill offenders under section 248 of the Criminal Law [Codification and Reform] Act and the procedural requirements under section 29(2) of the Mental Health Act for returning a special verdict. It also highlights the importance of psychiatric evidence in determining criminal responsibility and the court's role in ensuring both public safety and appropriate treatment for mentally disordered offenders.