Eleven Saint-Etienne fans, two with fractured skulls, were taken to hospital following violent incidents ahead of their club's Europa League defeat at Dnipro Dnipropetrovsk on Thursday.
French media reported members of the 150-strong travelling support were attacked in a bar in Kiev by fans of Dnipropetrovsk, whose team have to play their European games in the Ukrainian capital due to the ongoing unrest in the east of the country.
Artem Fedetskiy's second-half goal proved crucial as Dnipro booked their place in the Europa League's round of 32 with victory over St Etienne.
The Ukrainian side started the day bottom of Group F but their 1-0 success saw them jump into second place ahead of their opponents and FK Qarabag.
They were worthy winners on the night, but the excellence of Les Verts goalkeeper Stephane Ruffier had threatened to deny them until Ruslan Rotan rattled the woodwork in the 66th minute, leaving Fedetskiy to convert...