 Dillon suggested that because a number of UDR/UVF members were to be used for the Miami Showband ambush, Hanna was considered to have been a "security risk", and therefore had to be eliminated before he could alert the authorities.Dillon would later state that the killing had been carried out by Robin Jackson and Harris Boyle with Jackson shooting Hanna in the head at point blank range before firing a second shot as Hanna lay on the ground.According to this account Dillon maintained that Hanna's killing was purely a result of him having been labelled an informer.