Mohamedou Ould Slahi—United States government relationship

The relationship between Mohamedou Ould Slahi and the United States government began with repeated questioning about suspected terrorism and developed into secret cross-border detention, coercive interrogation, prolonged custody, and a legal dispute over whether he could be held. Its defining contradiction is that early investigations found no basis to connect him to the Millennium Plot, and Mauritanian authorities publicly affirmed his innocence, yet he was later transferred into a system of detention whose interrogations produced a false written confession and whose explanations for holding him remained contested.

Initial Questioning and a Return to Mauritania

After twelve years studying, living, and working abroad, primarily in Germany and briefly in Canada, Mohamedou Ould Slahi set out for Mauritania in January 2000. At the behest of the United States, Senegalese police and then Mauritanian authorities detained him; FBI agents questioned him about the Millennium Plot to bomb Los Angeles International Airport. Authorities concluded that there was no basis to believe he had been involved and released him on February 19, 2000. The episode established an early pattern: U.S. interest could initiate questioning across national borders, while the available inquiry did not establish the suspected connection.

For the following period, Mohamedou lived with his family and worked as an electrical engineer in Nouakchott. On September 29, 2001, Mauritanian authorities detained him for two weeks and FBI agents again questioned him about the Millennium Plot. He was released again, and the Mauritanian authorities publicly affirmed his innocence. On November 20, police came to his home to request further questioning. He complied voluntarily and drove his own car to the police station. Eight days later, the course of the relationship changed: a CIA rendition plane took him from Mauritania to a prison in Amman, Jordan.

Secret Transfer and Interrogation

In Jordan, Mohamedou was held and interrogated by Jordanian intelligence services for seven and a half months. The transfer placed him in a process involving more than one government: the United States arranged the rendition, while Jordanian officers carried out the questioning. At the time, even his family did not know that he was in Jordan. The secrecy was not incidental to the relationship; it separated him from ordinary legal and public scrutiny and made the detention difficult for relatives and outsiders to trace.

On July 19, 2002, another CIA rendition plane retrieved him from Amman and transported him to Bagram Air Base in Afghanistan. He was then interrogated for two weeks before being flown to Guantánamo with thirty-four other prisoners. The group arrived on August 5, 2002. These handovers carried him from Mauritanian custody to a Jordanian prison, then through a U.S.-operated transfer to Afghanistan and into the Guantánamo detention system. The sequence linked agencies and jurisdictions, but did not provide a public account of a criminal charge establishing his responsibility for the plots about which he had repeatedly been questioned.

Special Interrogation and the Production of a Confession

In 2003 and 2004, United States military interrogators subjected Mohamedou to a special interrogation plan personally approved by Defense Secretary Donald Rumsfeld. The plan involved prolonged isolation, degrading treatment, threats, threats directed at his family, and a staged rendition. The Senate Armed Services Committee later described how the staged scene moved him by boat and then placed him in a self-contained isolation hut at Camp Echo. Preparations included limiting light and outside contact. The documented plan and its implementation made the conditions of interrogation a matter of institutional record, rather than a question resting solely on Mohamedou’s recollection.

Investigative records also exposed how the interrogation was managed and reviewed. Stuart Couch, the Marine prosecutor assigned to build a case against Mohamedou, suspected that the intelligence he received did not reveal how it had been obtained. An investigator gained access to the military interrogators’ files, which included daily memoranda describing both the statements made in sessions and how information was extracted. The records remained classified, but the Senate Armed Services Committee and Department of Justice later summarized the special interrogation and its planning. Their accounts substantially corroborated the treatment described in Mohamedou’s diary.

Under interrogation, Mohamedou wrote a detailed confession to a supposed plan to bomb the CN Tower in Toronto. The statement described accomplices, explosives, financing, and a proposed route for obtaining religious approval. The confession was not an independent confirmation of the government’s suspicions: the diary presents it as a fabricated account produced in the coercive interrogation setting. Elsewhere, Mohamedou explains that he had no crimes to confess to and that interrogators were seeking evidence of criminal activity rather than innocent explanations. The difference between a written statement and reliable proof became central to the wider relationship: the state could produce a confession, but the circumstances of its production shaped what that confession could establish.

Command, Legal Challenge, and Continued Custody

Mohamedou’s account also depicts interrogation as an institutional chain of command. He recalled an interrogator reporting to a superior during breaks and believed that senior officials received regular briefings and directed what should happen next. He further recounted being told that the President was briefed about his case. These claims are presented as what he understood from conversations in detention, not as a complete independently verified account of every order. They nevertheless convey the imbalance between a prisoner subject to continuous decisions and a government whose authority appeared to him through successive interrogators and supervisors.

On March 3, 2005, Mohamedou handwrote a petition for a writ of habeas corpus. When Judge James Robertson considered the case, the central question was whether the government had shown that Mohamedou remained part of al-Qaeda when detained. Robertson found that his sporadic contacts with people who remained active in the organization did not, on their own, demonstrate that he was still a member; he granted the petition and ordered his release. The government appealed. The appeals court adopted a broader standard for determining whether a detainee was part of al-Qaeda and returned the case to the district court for rehearing. It also made clear that the government had not criminally indicted him for providing material support to terrorists and was not seeking detention on the ground that he aided the September 11 attacks. The legal contest therefore concerned continued detention, not a criminal conviction for those attacks.

Secrecy, Publication, and the Unresolved Relationship

The government’s control extended from Mohamedou’s custody to the account he wrote about it. He handwrote the 466-page manuscript that became Guantánamo Diary in his segregation cell in the summer of 2005. Government redactions remained visible throughout the published text, obscuring people, actions, and aspects of the narrative. The editor’s annotations drew on the manuscript’s context and public sources, including declassified documents and government investigations, but expressly did not attempt to reconstruct classified text. The distinction matters: the annotations offer contextual interpretation, not access to the unredacted account or confirmation of every possible reading.

The manuscript was cleared for public release in 2012, but that did not end the state’s control over the author or settle the legal dispute. By then Mohamedou had spent a decade at Guantánamo; although a federal judge had ordered him released two years earlier, the government’s appeal had sent the case back for rehearing. The editor reported that Mohamedou remained in the same segregation cell where he had written the diary. At the time the introductory account was written, he had not returned home after driving to the Mauritanian police station in November 2001. The relationship thus remained unresolved in two linked forms: the government continued to detain him without a final explanation that persuaded the editor, while censorship continued to limit how fully his account could be read. The movement from questioning to secret custody, and from handwritten testimony to a redacted publication, made control over both a person and the record of his treatment central to the story.