3 In 1996 the applicant lived at Corrimal in New South Wales with a woman by the name of Sherry Thompson and her child Erich Dumont who was then aged about 6 and their own child Aiden, an infant who had been born on 9 May 1995. Both the applicant and Ms Thompson were drug addicts, their drug of preference being heroin. Ms Thompson's health began to fail and in October 1996 the child Erich went to live with his biological father in Queensland. The applicant and Ms Thompson and their son Aiden remained together until Ms Thompson died in late June 1997. Twelve days later the applicant lodged claim forms with the government agency Centrelink making a claim for social security benefits known as Sole Parent Pension, Family Payment and Family Tax Payment. On the Sole Parent Pension claim form the applicant claimed that he had both Erich and Aiden under his care stating that he was Erich's guardian. At the time that form was filled in Erich was living with his natural father in Queensland, as he had been for more than nine months. On the claim form for the other benefits the applicant also listed Erich as living with him and stated that he was Erich's guardian. These claim forms were accepted by Centrelink and fortnightly payments of social securities commenced.