Sting-balls and rubber projectiles: The weapons French police are usingpublished at 12:38 BST
Hugh Schofield
Paris Correspondent
Image source, ReutersA riot police officer aims a crowd-control weapon during a student demonstration in Lyon
The French police - like all forces - have various "non-lethal" crowd-control weapons at their disposal. These are often criticised by the left and human rights groups for being dangerous and unsuitable for use against teenagers.
The most controversial are the Grenade à Main de Désencerclement (GMD) and the Lanceur de Balles de Défense (LBD). The first in English means Anti-encirclement Hand Grenade, and the second Defence Ball Launcher.
GMDs - often called sting-balls in English - are thrown by police along the ground. They create a loud bang and send out small fragments of rubber.
LBDs - which used to be called Flashballs after an early trademark - fire rubber projectiles from a gun.
The boy who lost his hand in Lens on Monday was injured by a GMD. The investigation will determine whether he tried to pick it up or was hit by the grenade.
An LBD has been blamed for another serious injury - a boy who lost his eye in Tours last week. During the Gilet Jaune riots of 2018-2019, LBDs were blamed for a lot of facial injuries to protesters.
In addition French riot police fire tear gas canisters, which can cause trauma if they make contact with a human body.

























