Mohamedou Ould Slahi—Mauritanian authorities relationship

Mohamedou Ould Slahi’s relationship with Mauritanian authorities began with questioning over the Millennium Plot and assurances that he was free to return to ordinary life; it changed decisively when he complied with a request to report to police and was secretly transferred out of the country. His family was told, in effect, that he remained in Mauritanian custody, although he had been taken first to Jordan and then onward through the United States detention system. The contrast between official reassurance and concealed transfer defines the relationship: local authorities had repeatedly released him, but after November 2001 his disappearance was sustained by the appearance that they still held him.

Questioning and Conditional Reassurance

In 2000, after returning to Mauritania following years abroad, Slahi was detained twice en route and questioned by American Federal Bureau of Investigation agents about the Millennium Plot. Authorities concluded there was no basis to believe he had participated, and he was released on February 19. The questioning did not end his connection to security agencies. On September 29, 2001, Mauritanian authorities detained him for about two weeks and the Federal Bureau of Investigation again questioned him about the plot. He was released, and the government publicly affirmed his innocence.

Between the arrests, Slahi worked in Nouakchott in computer and electronics jobs, including for a medical-supply company and a family-owned import business. He feared that the terrorism suspicion would cost him his employment. According to his account to a review board, the senior intelligence official contacted his employer while Slahi was present and said that he was a good person, had been questioned, and could return to work. His employer did take him back. This episode made official reassurance tangible in daily life: after his release, he could resume work, rather than remain formally excluded from it.

The November Summons and Disappearance

A little over a month after returning to work, Slahi spent a day at the Presidential Palace preparing a bid to upgrade President Maaouya Ould Sid’Ahmed Taya’s telephone and computer systems. That evening, police came to his home and asked him to accompany them for further questioning. He asked them to wait while he showered, dressed, took his keys, and drove his own car to police headquarters. He told his mother not to worry and expected to return soon. This time, he did not.

On November 28, a CIA rendition plane transported Slahi from Mauritania to a prison in Amman, Jordan. His family, however, was led to believe for almost a year that he remained in Mauritanian custody. His oldest brother, Hamoud, regularly went to the security prison with clean clothes and money for Slahi’s meals. Prison officials accepted the money while saying nothing about his absence. The gap between what the family was told and where Slahi actually was turned the local custody claim into a prolonged deception, and made his relatives unwitting participants in maintaining the appearance of his detention in Mauritania.

Discovery and Family Consequences

The family learned that Slahi was in Guantanamo not through Mauritanian officials, but through a Der Spiegel issue that Yahdih, his youngest brother, read on October 28, 2002. By then Slahi had been taken from Jordan to Bagram Air Base and then to Guantanamo. Yahdih, who had assumed Slahi’s former role as the family’s European breadwinner, was furious at local authorities because they had assured the family that Slahi was in their custody and safe. The discovery exposed not merely an undisclosed transfer, but the failure of the assurances on which the family had relied while continuing to pay for his supposed upkeep.

The consequences extended beyond the initial shock. Slahi’s family in Nouakchott depended on an extensive network of siblings and other relatives, while Yahdih, living in Düsseldorf, became a leading advocate for his brother’s release. In Mauritania, where activism could be risky, he took on that public role and helped organize a demonstration outside the Presidential Palace. The family’s ordinary responsibilities—earning a living, caring for relatives, and keeping in touch—were reorganized around a detention whose location and conditions had been concealed from them.

Contact, Separation, and Slahi’s Account

The first family call took place in 2008, six and a half years after Slahi disappeared. The International Committee of the Red Cross arranged the call between him in Guantanamo and a gathering of relatives in Nouakchott. His mother heard his voice for the first time in more than six years and wept. Slahi spoke with Hamoud for forty minutes, asking about marriages, siblings, and children; afterward, Hamoud said his brother seemed unchanged. The call restored a channel of contact, but it could not restore the years in which the family had believed the wrong account of his custody.

By 2013, the calls had become Skype calls, allowing the relatives to see one another, but Slahi and Yahdih’s mother had died. The calls remained rare: they were held twice a year under the Red Cross’s auspices, and Yahdih had asked whether they could be increased to three. Slahi’s account also frames the larger power imbalance directly. During interrogation, he argued that governments could subject non-citizens to arrest without the protections available to United States citizens, and accused the Mauritanian government of cooperating with the United States. This is presented as Slahi’s stated understanding of the relationship, not as an independently established account of every government action.

Evidence, Limits, and Significance

The relationship is reconstructed from Slahi’s narrative alongside publicly available materials, including declassified government documents, investigative reporting, and official reviews. The editor describes the effort to read the manuscript in the presence of government redactions, while explicitly declining to reconstruct classified text or claim certainty about what the black bars conceal. That evidentiary caution matters here: the transfer, the family’s mistaken belief, the prison visits, and the eventual discovery are described concretely, while speculation about withheld material remains bounded.

The Mauritanian authorities’ role therefore appears through a sharp sequence of reversals: questioning followed by release, reassurance followed by a voluntary summons, and apparent local custody alongside an undisclosed transfer abroad. For Slahi’s family, the practical consequences were years of misplaced trust, payments to a prison holding no Slahi, and delayed contact with him. His relationship with the authorities is consequently inseparable from the family’s experience of his disappearance: what began as repeated official scrutiny became a hidden absence that relatives were left to manage without knowing where he was.