JACOBUS JOHANNES DE RU
The fact that Elsa said that he went with Joseph to Lesotho and also in her statement she says that he told her that he killed her lover boy because he - sorry let me put this right - that Joseph cheated Chris in a diamond transaction.  These are things that I never knew about and the same goes with the robbery that morning, from Elsa's statement it would seem that he picked up Elsa and Joseph and he saw a person walking on the street and said I want to rob that guy because he's got money and with regards to the shopping centre the next morning.