The prefect of Pas-de-Calais, François-Xavier Lauch, described it as a "very serious incident" and said the student was transferred quickly to a hospital. The confrontation took place near the Auguste Béhal high school in Lens. Lauch stated that a "larger gathering" of students than on previous days had assembled outside the school.
"At the start of the morning, they threw various projectiles at the local police officers who were on site initially. When I say projectiles, I mean stones, fireworks, and mortars," Lauch told French media. He said instructions were given to deploy a company of riot police (CRS) to maintain order, and it was during this operation that the teenager sustained the injury.
French media have given conflicting accounts of how the boy was hurt. Regional newspaper La Voix Du Nord reported that he lost his hand after picking up a police stun grenade. Officials have not yet confirmed the cause. The regional prosecutor said an investigation would be conducted by the General Inspection of the National Police (IGPN) "so all light can be shed on what happened."
The incident is the most severe in a wave of school protests across France this month. Students have been demonstrating against deteriorating building conditions and staff shortages, leading to clashes with police. The number of schools affected on Monday represented a significant escalation in the movement's scale.