Teen Fatally Stabbed Outside High School in Essonne Amid Gang Rivalries

A 17-year-old boy was killed in a violent altercation tied to escalating gang tensions, with six suspects now in custody as investigations continue.

The victim, a 17-year-old from the Hautes-Mardelles neighborhood in Brunoy, was stabbed in the chest outside Louis-Armand High School in Yerres, Essonne, on March 24, 2025.
Emergency responders attempted to resuscitate the teen on-site for an hour, but he succumbed to his injuries.
Six suspects have been detained, and an investigation into intentional homicide and group violence has been launched.
The stabbing occurred in the context of ongoing tensions between rival gangs from the Hautes-Mardelles and Tournelles neighborhoods, reflecting a broader trend of youth gang violence in the region.
Authorities face challenges managing the rise in gang-related incidents, exacerbated by understaffing despite reinforcements from CRS 8.