Quentin D, 23, died in hospital from a traumatic brain injury sustained during an attack on the sidelines of a conference by LFI MEP Rima Hassan in Lyon.

Quentin, part of the security team for right-wing protesters from Collectif Némésis, was violently assaulted while the group staged a demonstration against Hassan’s visit.

The Lyon prosecutor’s office has opened an investigation for aggravated manslaughter, but no suspects have yet been identified.

French President Emmanuel Macron condemned the killing, calling for calm, restraint, and justice, while politicians from across the spectrum denounced the violence and debated responsibility, Euro News has reported.

Following the incident, several LFI offices across France were vandalized amid accusations and tensions between political factions, though LFI leaders stressed their security team was not involved in the attack.