With the apprehension of the robbers it can be assumed that they or at least one in the group with spill the beans (plea bargain) about their organisation, modus operandi, other crimes, and the insiders who were/are collaborating with them.
I think what you can "assume" is that they will probably be from somewhere other than SA, they will be released on minimal bail, and they will disappear.......
All of the above "if they" can pay off the right COPS.