A Sunday newspaper's report claims senior investigators have not been able to make any substantial in roads in their probe, meaning there is simply not enough evidence to make an arrest.
Three members of the Van Breda family were killed at their luxury golf estate home outside Stellenbosch six months ago.
Sixteen-year-old Marli van Breda and her brother Henri survived the attack.
The report article detailed while all the forensic evidence has been gathered, less than 20 percent of it can be used to make an arrest.