The appellants, Tshamuhau Maphaha and Thabo Molefe, were student police constables convicted of robbery with aggravating circumstances. On 13 April 2008, they participated with other police officers and civilians in a staged police operation that resulted in an armed robbery at CRH Continental in Wynberg, Johannesburg. Dressed in SAPS uniforms and armed, the appellants helped overpower security personnel and factory staff, guarded victims at gunpoint, and facilitated the theft of property. They claimed they believed they were assisting in foiling a robbery on instruction from a superior. Both were sentenced to 15 years’ imprisonment. Their petition for leave to appeal against conviction and sentence was refused by the High Court, leading to this appeal to the Supreme Court of Appeal.