Eleven people are in detention in connection with the killing of far-right student activist Quentin Deranque.

Quentin Deranque, 23, died on Saturday after being beaten up on the street by a group of young men.

In a press conference on Monday, prosecutor Thierry Dran said the victim, far-right activist Quentin Deranque, 23, had sustained a severe brain injury after being attacked 'at…