A considerable number of Toffees supporters are in the French city ahead of their club's Europa League Group H encounter with Lille at the Stade Pierre Mauroy on Thursday.
A statement issued on Everton's official website on Thursday morning said: "The club has been made aware of an isolated incident in a bar in Lille on Wednesday evening in which a number of Evertonians were attacked by a group of around 50 local men.
"The club understands that two Everton fans suffered minor facial injuries and were taken to the local hospital and that this was the only incident in what was otherwise a good-natured evening in the city centre.
"The club are in continual contact with Merseyside police officers who are in Lille today and the city's police representatives.
"Supporters travelling to tonight's match are advised to utilise the travel information provided on the official website where updates on any safety matters will also be provided."
It is understood at least 5,500 Everton fans will be in attendance at the stadium on Thursday evening.
Source : PA
Source: PA