UNKNOWN
As I have already explained, that they decided to kill Bongo Nkosi because he was aligned to the ANC and they decided that it was going to be a mistake if he takes over.  And the Chief who was there was very sick and he was in Nqgwelizani Hospital and then he told his Indunas who must take over, so he told them it must be Booi.  They knew that this was going to cause conflict because Bongo Nkosi was still alive, that's when they decided to kill him.