WASHINGTON (AP) — A document circulating among White House staff says a Senate report on the CIA’s interrogation and detention practices after the 9/11 attacks concludes that the agency initially kept the secretary of state and some U.S. ambassadors in the dark about harsh techniques and secret prisons.

Former U.S. Secretary of State Colin Powell speaks during a seminar in Tokyo, Wednesday, June 18, 2014. (AP Photo/Eugene Hoshiko)

Former U.S. Secretary of State Colin Powell speaks during a seminar in Tokyo, Wednesday, June 18, 2014. (AP Photo/Eugene Hoshiko)

The still-classified report also says some ambassadors who were informed about the practices were instructed not to tell their superiors at the State Department.

A former senior CIA official said the secretary of state at the time, Colin Powell, eventually was informed about the program and sat in meetings in which harsh interrogation techniques were discussed, but may not have been informed when the techniques were first used in 2002.

The official would not be quoted by name because some of the information remains classified.