The latest case involves missing runner Elizabeth Tsontso Mosela-kgomo, whose remains were found near the R21. A suspect has already been arrested in one of the murders, but investigators have yet to establish whether these cases are connected or share a similar modus operandi.
So, how do investigators begin piecing together a case like this — and what clues could ultimately lead them to the person or people responsible?
Retired Lieutenant-Colonel Elmarie Myburgh spent 30 years in the SAPS Investigative Psychology Unit. She joins us to unpack what typically goes into an investigation of this nature