Pro-Armenian protesters blocked a motorway in eastern France for two hours on Wednesday as tensions over the conflict in Nagorno-Katrabakh reverberate internationally.
France Bleu regional radio cited police as saying that clashes broke out with members of the local Turkish community.
Local newspaper Le Dauphine Libere reported that three people had suffered minor injuries and the fourth was hospitalized.
Armenian and neighbouring Azerbaijan have been fighting for weeks over the Nagorno-Karabakh region, an ethnically Armenian enclave which broke away from Azerbaijan during the collapse of the Soviet Union.
Turkey backs ethnically Turkic Azerbaijan.
France has one of the world’s biggest Armenian populations, largely descended from survivors of the massacres and deportations of Armenians by Turkish authorities in 1915-1916, which Armenians and many historians term the Armenian Genocide.