The State v Mtshumayeli Gwebu

On 29 November 2012, the accused Mtshumayeli Gwebu assaulted his aunt, Elda Gwebu, with a machete for no apparent reason. The incident was witnessed by Eltima Sibanda, who was walking with the deceased when the attack occurred. Initially, Sibanda thought it was a robbery but later learned it was the accused who had attacked the deceased. The deceased died in hospital on 6 December 2012. The post mortem report gave the cause of death as pulmonary oedema, herniated stomach into chest cavity, and congenital malformation. Prior to the incident, the accused had exhibited strange behavior indicating mental instability. During the investigation, the police officer was unable to record a warned and cautioned statement from the accused or take fingerprint specimens due to the accused being uncooperative and violent.

• Whether the accused was criminally responsible for his actions at the time of the offence given his mental state
• Whether the accused suffered from a mental illness that rendered him incapable of appreciating the wrongfulness of his conduct
• Whether a special verdict should be returned under section 29(2) of the Mental Health Act

The accused was found not guilty of murder by reason of insanity. The court ordered that the accused be committed to Mlondolozi psychiatric institution as he was considered a danger to society.

Where an accused person is shown through psychiatric evidence and corroborating witness testimony to have been suffering from a mental illness (such as schizophrenia) at the time of committing an offense, rendering them incapable of being held legally responsible for their actions, the court must return a special verdict of not guilty by reason of insanity under section 29(2) of the Mental Health Act [Chapter 15:12]. Where such a person is considered a danger to society, the court has the power to order their committal to a psychiatric institution notwithstanding the acquittal.

The judgment does not contain significant obiter dicta. The court's reasoning was focused on the application of the Mental Health Act provisions to the facts established by the psychiatric and witness evidence. The court's observation that it had "no option" but to return a special verdict reflects the mandatory nature of the provision when mental incapacity is established, rather than additional commentary on the law.

This case demonstrates the application of the Mental Health Act's provisions regarding criminal responsibility in Zimbabwean law, specifically the special verdict procedure under section 29(2) when an accused person is found to have been suffering from a mental illness at the time of committing the offense. It illustrates how psychiatric evidence and witness testimony regarding an accused's mental state are evaluated in determining criminal responsibility, and how courts balance the interests of justice with public safety by committing mentally ill offenders to psychiatric institutions rather than imposing criminal punishment.