A report by Helgerson's office completed in the spring of 2004 warned that some CIA-approved interrogation procedures appeared to constitute cruel, inhuman and degrading treatment, as defined by the international Convention Against Torture. Some of the inspector general's work on detention issues was conducted by Mary O. McCarthy, who was fired from the agency in 2006 after being accused of leaking classified information. Helgerson's office is reportedly nearing completion on a number of inquiries into CIA detention, interrogation, and renditions. Members of the House and Senate intelligence committees expressed concern about the inquiry, saying that it could undermine the inspector general's role as independent watchdog. Senator Ron Wyden (D–Oregon) said he was sending a letter to Mike McConnell, the director of national intelligence, asking him to instruct Hayden to drop the inquiry.