Nabil Greseque

17.04.2023 ( Last modified: 30.03.2023 )
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Ongoing proceedings against alleged Islamic State (ISIS) fighters accused of genocide and crimes against humanity committed against Yazidis

Type of jurisdiction

Active personality


Nabil Greseque, French national who allegedly joined ISIS in Syria

Country of residence of suspects



As the case is at the investigation stage, the suspects have not yet been formally charged. The investigation focuses on genocide through serious harm to physical and mental integrity against Yazidi victims; crimes against humanity of enslavement, imprisonment or any other form of severe deprivation of liberty in violation of fundamental provisions of international law, torture, rape, persecution and other inhumane acts against civilian victims.

Current Status

Under investigation


In 2014, Greseque travelled to Syria to join ISIS.

In August 2014, ISIS fighters invaded Mount Sinjar, the stronghold of the Yazidis, a Kurdish-speaking religious minority in northern Iraq. Thousands were killed and thousands of women and teenage girls were kidnapped and sexually enslaved in Iraq and Syria.


In 2016, the Prosecutor of the French Specialized Unit for the prosecution of genocide, crimes against humanity, war crimes and torture of the Paris Tribunal (integrated in 2019 within the newly created French National Anti-Terrorist Prosecution Office) opened a preliminary investigation into alleged genocide and crimes against humanity perpetrated by ISIS against the Yazidi community in Syria and Iraq.

In 2018 and 2019, the International Federation for Human Rights (FIDH) legally represented Yazidi survivors who gave their testimonies to the investigators regarding the participation of French suspects in the crimes they suffered.

On 10 July 2020, a judicial investigation was opened against Greseque for genocide and crimes against humanity committed in Syria against Yazidis between 2015 and 2016.

Developments in 2022

In January 2022, a representative of FIDH’s partner organization, Kinyat, based in Iraqi Kurdistan, was heard as a witness in the Greseque investigations.

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