Powell v Honourable Mr Justice WJ van der Merwe

Mr Oliver Powell, an insolvency practitioner, was subjected to search and seizure operations at his Johannesburg home and business premises, as well as his farm in Ellisras, during October and November 1999. These operations were conducted under the National Prosecuting Authority Act 32 of 1998 by the Investigating Directorate for Serious Economic Offences (IDSEO). The preparatory investigation authorising the searches was initiated by the then head of the IDSEO, Advocate Jan Swanepoel. Powell challenged the legality of both the investigation and the resulting search warrants. His challenge was dismissed by the Pretoria High Court, after which he appealed to the Supreme Court of Appeal.

The appeal was upheld. The preparatory investigation and the search warrants issued under it were declared invalid and set aside.

The case is significant for reinforcing constitutional and statutory limits on search and seizure powers exercised by prosecuting authorities. It underscores the requirement that investigations under the National Prosecuting Authority Act must be properly and narrowly instituted, and that search warrants must be specific and not over-broad, thereby strengthening protections for privacy and legality under South African law.