Plaatjies v Director of Public Prosecutions, Transvaal

The appellant was convicted in the regional court of murder, assault with intent to do grievous bodily harm, and unlawful possession of a firearm, and sentenced to imprisonment. On appeal, the High Court set aside the convictions and sentences because the trial magistrate committed a fatal procedural irregularity by presiding over a murder trial without assessors and without the appellant’s consent, rendering the court improperly constituted. The Director of Public Prosecutions subsequently reinstituted the same charges. The appellant raised a plea of autrefois acquit, which initially succeeded, but the High Court on appeal held that the plea could not succeed because the earlier setting aside was based on a technical irregularity and not on the merits. The appellant then appealed to the Supreme Court of Appeal, arguing that section 35(3)(m) of the Constitution extended the double jeopardy rule to bar a retrial even where the prior proceedings were vitiated by procedural defects.

The appeal was dismissed, and the reinstitution of the criminal proceedings against the appellant was upheld.

The case reaffirms that the constitutional right against double jeopardy in section 35(3)(m) does not bar a retrial where earlier proceedings were set aside due to technical or fatal procedural irregularities. It confirms the continued validity of section 324 of the Criminal Procedure Act and clarifies that constitutional rights do not automatically expand common-law protections beyond acquittals on the merits.