Throughout June 2004, as Rau's condition deteriorated, other prisoners began to suspect that she was ill, because she would pace all day and would slam doors. Kilroy said that she attempted to raise the matter with BWCC officials, but they said that it was a DIMIA responsibility. On 5 July, Anna was one of 25 prisoners interviewed by an Ethical Standards Unit from the Government of Queensland, which was investigating claims of abuse within the prison system. During the taped interview, Anna recalled an incident in which she was sent to solitary confinement in the Detention Unit (DU), for attempting to obtain a newspaper from another room in the prison. During Rau's six months in BWCC, she spent five weeks in solitary confinement in the DU.