A later "60 Minutes" broadcast an interview with Marian Carr Knox, secretary to Killian at the time, who stated that she "didn't type these memos", although she stated she had typed memos of similar content. CBS then formed an independent panel headed by former U.S. Attorney General Dick Thornburgh and retired Associated Press president Louis D. Boccardi to investigate the story and the handling of the Killian memos. The final report of the panel, while not addressing the authenticity of the documents, faulted many of the decisions made in developing the story, and producer Mary Mapes along with three others were forced to resign from CBS News. Prior to the panel report being completed, Rather announced the date of his retirement, left "60 Minutes Wednesday", stepped down as anchor on March 9, 2006, and then left CBS altogether on June 20, 2006. The CBS news show that had aired the memos, "60 Minutes Wednesday", was canceled on May 18, 2005, allegedly due to poor ratings and not because of the memos broadcast. In September 2007, Rather sued CBS and its former parent company, Viacom, for US$70 million, claiming that he had been made a "scapegoat" over the memos story. His legal fight with CBS ended in January 2010 when the New York State Supreme Court declined to hear his motion to reinstate his lawsuit.