Embedded Player The CIA has used coercive interrogation techniques since Sept. 11, 2001, for high-level suspects such as Khalid Shaikh Mohammed, according to The New York Times. The CIA inspector general is investigating the deaths of three low-level prisoners. Experts say it is difficult to determine whether official policy or rogue actions are to blame when interrogations cross a line. Hear NPR's Melissa Block and NPR's Mary Louise Kelly.