Jacky Matza on Sunday refuted allegations of any improper conduct regarding his appointment as director of the Tax Authority and the suspected irregularities in his administration. "I was astounded to hear during the investigation the claim that outside forces led to my appointment," Matza wrote in a letter sent from his detention cell to Finance Minister Avraham Hirchson. "I received credentials from 'wall to wall,' from the outgoing director of the Authority, Eitan Rob, senior officials of the Treasury, and a long list of former senior representatives of the Tax Authority," said Matza, who on Sunday remained in detention for another day on suspicion of involvement in the alleged bribery scandal at the Tax Authority. Matza added in the letter that he was appointed to his position after Attorney-General Menahem Mazuz, ruled against appointing an external candidate. "During my tenure, I made a number of appointments at different levels. All appointments were done in a proper manner to my best judgement, trust and conscience." The letter came on the same day that Dr. Yossi Bachar, outgoing director-general of Finance Ministry, took up his temporary position as director of the Tax Authority, for the duration of the investigation and until there is clarity over whether Matza will be able to return to his post. "I very much hope and look forward for the police to finish the investigation quickly, so that leadership can be handed back to Jacky Matza as soon as possible," said Bachar, at a meeting with 100 senior tax officials at the Tax Authority on Sunday. Following days of deliberation, Bachar on Saturday evening, decided to accept Prime Minister Ehud Olmert's and Hirchson's requests to take up the temporary post. In his letter, Matza, welcomed Hirchson's decision to appoint Bachar as interim director at the authority. "I very much support Bachar's nomination as interim director, out of concern for the tax authority and in view of the importance of its ability to return as soon as possible to function in full capacity," said Matza. Furthermore, Matza, acknowledging that he won't be returning to his post in the near future, said that he would need to invest all of his resources and energy in this investigation in an effort to clear his name and good reputation and thus the appointment of an interim director was appropriate.