French authorities arrested nine suspects in connection with the killing of far-right activist Quentin Deranque in Lyon.

Prosecutor Thierry Dran said six suspects are believed to have taken part in the beating, while three allegedly assisted them.

The attack occurred on the sidelines of a far-right protest against a left-wing politician, and video footage aired by TF1 showed multiple people assaulting victims with what witnesses described as iron bars.

Deranque died from a severe brain injury sustained during the assault, the DW has reported.

Authorities continue investigating the circumstances surrounding the deadly clash.