 This incident is on top of the illegal detention of Cornelia Rau, an Australian citizen who was accidentally imprisoned in a detention centre when the immigration department suspected her of being an illegal immigrant.
<clarity>  This incident is on top of the illegal detention of Cornelia Rau, an Australian citizen who was accidentally imprisoned in a detention centre when the immigration department suspected her of being an illegal immigrant.
 This incident is on top of the illegal detention of Cornelia Rau, an Australian citizen , was accidentally imprisoned in a detention centre when the immigration department suspected her of being an illegal immigrant.