Four people, including a parliamentary aide to an LFI lawmaker, were arrested on suspicion of involvement in the fatal beating of 23-year-old Quentin Deranque outside a conference in Lyon. Widely shared video footage of the attack prompted Lyon prosecutors to open a murder probe. The incident has intensified political tensions between the hard left and the far right in France, drawing calls for calm from leaders across the spectrum.
Four Detained, Including Lawmaker’s Aide, After Fatal Beating Of Far-Right Activist In Lyon
A french flag with a 'Justice for Quentin' message is displayed as people gather to pay tribute to Quentin, an activist who died from injuries sustained during a beating on February 12 in Lyon, during a demonstration at the Place de la Sorbonne in Paris, France, February 15, 2026. REUTERS/Stephane Mahe
Four people, including a parliamentary aide to a hard-left lawmaker, were arrested on suspicion of involvement in the fatal beating of a far-right activist outside a conference in Lyon, police said on Tuesday.
Quentin Deranque, 23, died on Saturday after being beaten during an altercation outside an event hosted by Rima Hassan, a far-left member of the European Parliament. Video footage of the confrontation has been widely shared on social media, prompting public outrage and intense media coverage.
Raphaël Arnault, a lawmaker from La France Insoumise (LFI, often rendered in English as France Unbowed), confirmed his parliamentary assistant was among those detained and said the aide had "stopped all parliamentary work." A police source spoke on condition of anonymity that the aide and three others were arrested on suspicion of involvement in the attack.
Investigation Underway
On Monday, Lyon prosecutor Thierry Dran opened a murder probe into Deranque's death. Authorities said the inquiry will seek to establish responsibility and the precise sequence of events leading to the fatal beating.
Political Repercussions
The killing has sharpened political tensions in France, where street clashes between the hard left and the far right are not uncommon. The incident has intensified criticism of LFI from opponents, while the far-right National Rally has portrayed itself as a target of political violence.
"Let's not fuel the incitement to take the law into one's own hands," LFI leader Jean-Luc Mélenchon wrote on social media, calling for calm.
Jordan Bardella, president of the far-right National Rally, accused Mélenchon of having "opened the doors of the National Assembly to presumed murderers." President Emmanuel Macron also appealed for calm following the killing.
The investigation is ongoing. Prosecutors and police have not yet released full details on motives or the roles of those arrested; all suspects are being treated as presumed innocent until proven otherwise in court.
Reporting: Sophie Louet and Gabriel Stargardter in Paris; Charlotte Van Campenhout in Amsterdam. Editing: Jonathan Oatis.
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