Tottenham Hotspur have confirmed that three supporters sustained "minor injuries" following an attack in Lyon last night.
Tottenham posted a message on their official Twitter feed saying: "Club officials attended an incident last night in Lyon. A group of around 50 people confronted fans. The situation was dealt with & arrests were made within the hour.
"Three fans sustained minor injuries & received prompt medical assistance. Spurs Officials & Stewards will be in the City throughout the day, along with match-day French police ahead of kickoff."
The attackers are thought to be right-wing extremists.