Johannesburg - Vusi Ernest Mabaso, one of the men accused of killing seven family members from Vlakfontein and raping some, was found hanging a police cell.
Mabaso committed suicide on January 18 at the Cape Town Central Police Station.
Gauteng Community Safety spokesperson Ofentse Morwane said the case against Mabaso was "quite complex" and he had been taken to Cape Town as part of the broader investigations into it.
However, police found him dead on January 18.
"He hung himself," Morwane said.