In this pool photo of a Pentagon-approved sketch by court artist Janet Hamlin, defendant Khalid Sheikh Mohammed, left, speaks with lead defense lawyer David Nevin during a pretrial hearing at the Guantanamo Bay U.S. Naval Base in Cuba, Monday, April 14, 2014. A lawyer for one of five defendants in the Sept. 11 war crimes tribunal said Monday that FBI agents questioned a member of his defense team, apparently in an investigation related to the handling of evidence, a revelation that brought an abrupt halt to proceedings. (AP Photo/Janet Hamlin, Pool)