UN working group condemns arbitrary detention of Niger human rights defender
The United Nations Working Group on Arbitrary Detention has issued a landmark opinion declaring the detention of Nigerien human rights advocate Moussa Tiangari entirely unlawful. The decision, rendered on March 23, 2026 and made public on June 23, 2026, follows a formal complaint submitted by the International League Against Arbitrary Detention and sustained advocacy from civil society organizations.
In a strongly worded statement, the Working Group found that Tiangari’s prolonged detention lacks any legal justification, violates his right to a fair trial, and stems from discriminatory motives tied to his legitimate exercise of freedom of expression and peaceful assembly. The opinion explicitly cites breaches of multiple articles from both the Universal Declaration of Human Rights and the International Covenant on Civil and Political Rights, to which Niger is a signatory.
From abduction to ongoing imprisonment
The timeline of events reveals a pattern of state repression against Tiangari, whose activism has long drawn official disapproval. On December 3, 2024, he was forcibly taken from his residence in Niamey and held incommunicado for approximately 48 hours—a period during which there are credible concerns about torture and ill-treatment. He was subsequently transferred to the custody of the Central Service for the Fight Against Terrorism and Organized Crime in Niamey and formally charged on January 3, 2025 by the investigating judge of the Niamey High Court.
His arrest coincided with his return from Abuja, Nigeria, where he had attended the board meeting of the Centre for Democracy and Development—a partner organization of his own group, Alternative Espaces Citoyens. Just days earlier, he had participated in the seventh edition of the Itinerant Humanitarian conference in Abidjan, Côte d’Ivoire, organized by the International Committee of the Red Cross to commemorate the 75th anniversary of the Geneva Conventions. A pro-government journalist later accused him of delivering speeches deemed damaging to Niger’s interests during this event. Notably, Alternative Espaces Citoyens had also organized a November 28, 2024 conference criticizing the military regime’s decision to revoke the nationality of certain individuals, an event attended by the Niamey prosecutor and former high-ranking officials.
Legal maneuvering to prolong detention
Despite the UN’s unequivocal ruling, Tiangari remains imprisoned at the high-security prison in Filingué, facing charges that could result in the death penalty if convicted. These include apology for terrorism, attacks against state security, criminal association linked to a terrorist enterprise, attacks against national defense, and conspiracy against state authority in collusion with foreign powers. His legal team points out that the original criminal procedure code limits pretrial detention in terrorism cases to twelve months, renewable once. Yet on June 26, 2026, a retroactive amendment extended this maximum to four years, raising serious concerns about selective enforcement.
On May 15, 2026, the Niamey Court of Appeal’s specialized chamber denied Tiangari’s request for provisional release. His lawyers filed a new motion on June 19, 2026, arguing that his prolonged detention—now exceeding 18 months—violates statutory time limits. The Working Group’s opinion further highlights that the procedural irregularities in his case violate multiple fair trial guarantees under international law.
A history of judicial harassment
This is not the first time Tiangari has faced arbitrary detention. In May 2015, he was held for ten days and charged with attacks against national defense and statements likely to demoralize troops over reports published by Alternative Espaces Citoyens. In March 2018, he was arrested again and held for four months on charges related to peaceful protests against the 2018 finance law, including organizing unauthorized demonstrations and complicity in violence and property destruction. In March 2020, he was detained for six weeks following an anti-corruption protest denouncing embezzlement in military procurement.
Systemic erosion of civic space in Niger
Tiangari’s case reflects a broader crackdown on dissent in Niger since the July 27, 2023 military takeover. Civil society organizations, independent media, and political opponents have faced repeated violations of fundamental freedoms, including arbitrary arrests, enforced disappearances, and politically motivated revocations of nationality. The Working Group’s opinion underscores that such measures contravene Niger’s obligations under international human rights law, particularly regarding freedom of expression, association, and peaceful assembly.
Urgent call for justice and compliance
Civil society groups are demanding immediate and unconditional release of Moussa Tiangari, the dismissal of all charges against him, and his right to full reparations. They also urge a thorough, independent investigation into his arbitrary detention, torture allegations, and the responsible officials. Most critically, they call on Niger to end all forms of judicial and extrajudicial harassment against Tiangari and other human rights defenders, and to uphold international standards protecting freedom of expression as outlined in Article 19 of the International Covenant on Civil and Political Rights and Article 9 of the African Charter on Human and Peoples’ Rights.