France, April 6 -- A French teenager has died from wounds suffered during a violent assault outside a school. It's the second brutal attack on a pupil in a week, prompting President Emmanuel Macron to warn schools need to be protected from the "uninhibited violence" of some youths.

The 15-year-old boy was badly beaten on Thursday near his school in Viry-Chatillon, about 20km south of Paris, and rushed to hospital following a cardiac arrest. He died of his wounds on Friday afternoon, the public prosecutor's office said.

An investigation has been opened into murder and gang assault.

Police on Friday afternoon detained five people linked to the attack, including three 17-year-olds, a 15-year-old and a 20-year-old.

Jean-Marie Vilain, the ...