Boy, 15, arrested after at least one child killed and three injured at Notre-Dame-de-Toutes-Aides school in Nantes

The French prime minister, François Bayrou, has called for a crackdown on teenage knife crime after a high-school student stabbed four other children at his school, killing at least one and injuring the others before being arrested.

The 15-year-old reportedly attacked fellow students with a knife during lunch break on Thursday at the private Notre-Dame-de-Toutes-Aides secondary school in the city of Nantes on the Atlantic coast. The attack took place at around 12.30pm (11.30am BST), before teachers overpowered the boy. One female student was killed. At least one other student is in a critical condition in hospital.