This is a 6-page letter dated 9/6/2007 from the Inspector General of CIA to the President's Foreign Intelligence Advisory Board (PFIAB). The letter states that on 8/29/07 the PFIAB requested clarification of an OIG "determination that there were no illegal activities by the CIA or any of its officers during the course of the reported incident." This reported incident seems to have involved a "particularly serious problem" that the CIA Office of Congressional Affairs reported to the Congressional Oversight Committees 3/22/06. This "particularly serious problem" was also discussed in CIA_Part049.pdf.