A teenage girl has been killed and three students were injured in a stabbing at a private school in western France.
The attack took place at Notre-Dame-de-Toutes-Aides school in Nantes on Thursday afternoon.
The attacker is said to have been arrested at the scene after being restrained by a teacher.
A significant police presence and emergency services were sent to the school, with army officers also present. It has since been evacuated.
Eyewitness accounts in local media described students running through the site, with some confined to classrooms after an alarm was sounded around lunch time.
Families were informed of the knife attack and told students had been immediately held inside the school.
Authorities helped students gradually leave the site from 15:30 local time (13:30 GMT), as some parents waited nearby.
The school has around 2,000 students and educates pupils from nursery through to high school, according to its website.
Psychological support has been put in place for students and teachers. Rue des Épinettes, where the school is located in the east of the city, has been closed off.