Mohamedou Ould Slahi’s transfer into the Guantánamo detention system shifted his detention across several countries and into a new regime of isolation and interrogation. The journey from Jordan through Afghanistan to Guantánamo unfolded while his family was led to believe he remained in a prison in Mauritania. At Guantánamo, restrictions on contact and movement made the transfer more than a change of location: it altered what Slahi could know, whom he could see, and whether outside observers could find him.

Route and stakes

After Slahi voluntarily went to Mauritanian police headquarters for questioning, his family believed he was being held locally. In fact, a CIA rendition flight had taken him to Jordan about a week later. Months afterward, the United States retrieved him from Amman and transferred him to an air base in Afghanistan; a few weeks after that, he was taken to the Guantánamo Bay detention camp. The account gives no single date for the final leg, but places it after his months in Jordan and before his family learned where he was.

The transfer belonged to a much wider itinerary of detention and interrogation. Slahi’s account describes roughly twenty thousand miles traveled over eighteen months, through four countries, often with American participation and at the behest of the United States. What had ostensibly begun as questioning in Mauritania thus became a sequence of transfers in which national borders did not bring him closer to home or to a publicly acknowledged legal process.

A transfer hidden from his family

For almost a year, Slahi’s relatives were left to believe that Mauritanian authorities still held him. His oldest brother, Hamoud, regularly delivered clean clothes and money for his meals at the security prison. The money was accepted even though Slahi had already been taken out of the country; prison officials said nothing and pocketed it. The family’s effort to care for him therefore continued within a false account of where he was and who controlled his custody.

The deception ended for his youngest brother, Yahdih, through a newspaper rather than an official notice. On October 28, 2002, he read in Der Spiegel that Slahi had been held for months in a wire cage at the American prison camp in Guantánamo. Yahdih’s anger fell first on the local authorities who had assured the family that Slahi was safe in their custody. His discovery revealed the consequence of the transfer beyond Slahi’s own confinement: relatives had been denied accurate information while continuing to act on the authorities’ false assurances.

A new phase of confinement

Slahi’s Guantánamo account marks a change in the conditions and rules governing his detention. He describes being told that conduct previously treated as no crime was now regarded as criminal, and that he was considered more dangerous than people captured with weapons. The change sharpened the contrast between the uncertainty of his legal status and the confidence with which interrogators characterized him. His transfer had not resolved the questions surrounding his detention; it brought him into a system that presented him as a high-level threat while keeping him confined without a clear public account of the case against him.

The later account of his treatment describes the use of an isolated block in which he had no contact with other detainees. He was deprived of books, religious materials, and ordinary comfort items, and interrogations continued around the clock for seventy days, often across three or four shifts. These details concern the period that followed his arrival rather than the journey itself, but they show what entry into the Guantánamo system came to mean in practice: confinement structured to limit contact, rest, and access to information.

Concealment and access

The record of Slahi’s detention also includes repeated efforts to prevent the International Committee of the Red Cross from seeing him. In Jordan, prison rules posted on a door stated that the ICRC visited every fourteen days, but instructed prisoners not to discuss their political cases. Slahi later learned that guards moved him into a cellar during those visits and returned him afterward. The pattern lasted through his eight months in Jordan. It demonstrates that the transfer to Guantánamo followed a period in which access by outside observers had already been manipulated, not simply a change from one transparent custody arrangement to another.

At Guantánamo, the ICRC was not allowed to visit Slahi until September 2004, after a prolonged dispute with the government. Representatives had tried to find him and establish where he was; the account describes his disappearance from their view as abrupt. When the visit finally occurred, he concealed the mistreatment he had experienced because he feared retaliation. Access, therefore, did not automatically produce a full account of what had happened: the delay and Slahi’s fear constrained what the visitors could learn.

Corroboration and the limits of the record

The published account is accompanied by annotations that attempt to read around government redactions, but their editor explicitly distinguishes plausible interpretation from recovery of the hidden original text. The notes draw on the manuscript, public records, declassified documents, news reporting, and government investigations; they do not claim to reconstruct classified material. That distinction matters for understanding the transfer and its aftermath: the censored record can be contextualized, but the missing text cannot simply be treated as known.

Some parts of Slahi’s later Guantánamo experience were independently examined. A Naval Criminal Investigative Service investigator obtained military interrogators’ files, including daily memoranda describing what was said and how information was extracted. Although the files remained classified, the Senate Armed Services Committee’s inquiry and a Justice Department review summarized their contents and documented a special interrogation conducted under a second approved plan. The reports also described plans for a staged journey and an isolated cell at Camp Echo, with measures intended to reduce outside stimuli. These findings supported important elements of Slahi’s account of what followed his transfer, while leaving the underlying classified records unavailable to the public. The event thus stands at the hinge between a concealed cross-border transfer and a detention whose conditions were later described both by Slahi and in official investigations.