Mike Tshuma was charged with the murder of Endboy Moyo, which occurred between 5 and 8 August 2010. He pleaded not guilty. During trial, the State sought to introduce a warned and cautioned statement allegedly made by the accused on 28 October 2010 to Detective Assistant Inspector Lungisani Pius Tshuma. The accused was serving a prison sentence for stock theft at the time he was removed from Khami prison for investigations. The investigating officer stated that the accused elected to make a statement, claimed to be illiterate, and had the statement written down for him by the officer in Isindebele. The statement was read back to him and he signed it. The accused made indications at the scene where the deceased was found. The statement was subsequently confirmed before a magistrate. The accused objected to the admissibility of the statement, alleging it was improperly obtained through assault by Detective Assistant Inspector Tshuma and four other officers who forced him to admit to killing the deceased by hitting him on the knees and feet.
The court ruled that the accused gave his warned and cautioned statement voluntarily and the statement is admissible as evidence in the murder trial.
In a trial-within-a-trial, the prosecution bears the burden of proving beyond reasonable doubt that a warned and cautioned statement was made freely and voluntarily, without inducement by promise or threat from a person in authority. A statement will be admissible if: (1) it was made voluntarily without the accused feeling legally bound to make it; (2) no violence, threats or undue influence were used; (3) no promises were made as inducement; and (4) proper procedural safeguards were followed including confirmation before a magistrate without police presence in the courtroom. Where the accused challenges the voluntariness of a statement, he must effectively discredit the State's evidence through cross-examination or his own testimony; mere allegations of assault without corroboration or credible evidence are insufficient to exclude a properly recorded and confirmed statement.
The court observed that the State witnesses (both police officers with investigative duties) gave their evidence credibly and without seeking to exaggerate, and had no personal interest in the case other than their professional duties. The court also noted that the accused's claim of illiteracy was inconsistent with his ability to sign his name on the statement. The court implicitly recognized that the fact police officers were present outside rather than inside the courtroom during the magistrate's confirmation was an important procedural safeguard to ensure the accused could speak freely about any impropriety in obtaining the statement.
This case demonstrates the application of established principles regarding the admissibility of confessions and warned and cautioned statements in Zimbabwean criminal procedure. It illustrates the burden of proof required in a trial-within-a-trial, where the prosecution must prove beyond reasonable doubt that a statement was made freely and voluntarily. The case also shows the procedural safeguards including confirmation by a magistrate and the requirement that police officers not be present during such confirmation proceedings. While this is a Zimbabwean case, it applies common law principles that have historically been shared across Southern African jurisdictions and demonstrates the importance of protecting accused persons' rights while allowing properly obtained evidence to be admitted.