Christoffel Johannes Kok v The State

The appellant, a senior South African Police Service officer, was charged with two counts of murder and one count of attempted murder after he shot and killed Mr and Mrs Botha at their home on 13 January 1997 and attempted to kill their son, who escaped. The appellant used a shotgun and a 9mm pistol issued to him. It was common cause that he committed the acts. His sole defence was that at the time of the shootings he lacked criminal capacity due to automatism allegedly arising from post-traumatic stress disorder (PTSD), brought about by prolonged occupational stress as a policeman and triggered by a dispute involving the Bothas and the execution of a small claims court judgment against his wife. Expert psychiatric evidence was led for both the defence and the State. The trial court rejected the defence, convicted the appellant on all counts, and sentenced him to an effective term of 10 years’ imprisonment. The appeal was against both conviction and sentence.

The appeal against conviction and sentence was dismissed; the convictions and effective sentence of 10 years’ imprisonment were confirmed.

The case is significant for clarifying South African criminal law on automatism and mental illness. It confirms that automatism arising from post-traumatic stress disorder, if it negates criminal responsibility, falls under mental illness for purposes of section 78(6) of the Criminal Procedure Act and does not constitute 'sane automatism'. The judgment also reinforces that criminal responsibility is a legal determination for the court, not a medical conclusion dictated by expert witnesses.