But Zachary Katznelson, the legal director of charity Reprieve, whose lawyers represent Mr Mohamed, said he was concerned that crucial evidence would be kept from the inquiry.

BBC: Police to probe UK torture claims

In his book, When Affirmative Action Was White, Ira Katznelson details how supposedly color blind legislation and programs -such as the GI Bill and the Fair Labor Standards Act - were manipulated to exclude blacks.

NPR: Living in the Present Means Taking Focus off Past

"Any plea deal and testimony by Majid Khan must be seen in the context of his years of secret, incommunicado detention and torture at the hands of the CIA, and the prospect of trial by an unfair military commissions system, " said Zachary Katznelson, a senior lawyer for the American Civil Liberties Union who was at Guantanamo to observe the proceedings.

CNN: Terror suspect at Guantanamo pleads guilty