PARIS: Several suspects have been identified in an investigation into the death of a French far-right activist, including some linked to the “ultra-left movement,” a source following the case told AFP on Tuesday.

Quentin Deranque, 23, died after sustaining a severe brain injury when he was attacked by at least six people last week on the sidelines of a far-right protest against a left-wing politician speaking at a university in the southeastern city of Lyon.

The suspects were not known to authorities as security threats, the source added.