French anti-terrorism prosecutors opened a preliminary investigation on June 5 into suspected torture and war crimes regarding Israel's treatment of French nationals aboard the Gaza-bound Global Sumud Flotilla, intercepted on May 18, 2026 [1, 2, 3, 4, 5].
The probe follows a referral by the French Foreign Ministry on May 28 under Article 40 of France’s criminal procedure code, citing information on violence against the activists [1, 4, 5]. French Foreign Minister Jean-Noel Barrot said he "referred the matter to the public prosecutor under Article 40 of France's Code of Criminal Procedure after receiving information about alleged violence against French activists aboard the flotilla" [5].
The Global Sumud Flotilla sought to deliver humanitarian aid to Gaza and challenge Israel’s naval blockade. Israeli forces intercepted the flotilla in international waters on May 18, detaining over 430 activists from approximately 40 countries, including more than 30 French nationals [1, 2, 4, 5].
Several French activists reported severe mistreatment during detention, including violent abuse, sexual assaults, stress positions, and psychological humiliation [1, 2, 4, 5]. At least 15 activists alleged sexual assaults including rape; some were hospitalized, and two French activists remained hospitalized in Turkey as of late May [1, 2, 4].
Israel denied all abuse allegations. An Israeli prison service spokesperson called the accusations "entirely without factual basis" [1, 2, 4]. Meanwhile, Israel’s National Security Minister Itamar Ben-Gvir posted a video mocking the bound activists, drawing international condemnation [2, 4, 5]. France responded by banning Ben-Gvir from entering the country and summoning the Israeli ambassador [2, 4, 5].
The investigation is led by France’s National Anti-Terrorism Prosecutor’s Office (PNAT) and entrusted to the office handling crimes against humanity and hate crimes (OCLCH) [1, 5]. Legal experts said this appears to be "the most severe case of ill-treatment documented in the past 10 years" for flotilla activists, according to Suhad Bishara, legal director at Adalah [4]. Francesca Albanese, a UN expert, stated the treatment of activists "is a luxury compared to what is inflicted on Palestinians in Israeli prisons" [2].
This investigation follows reports from eight French activists who returned to France on May 22 describing violent and humiliating ordeals in Israeli detention [2, 4]. The investigation remains ongoing.
