Wales football fans have started gathering for the hotly anticipated Euro 2016 match with England.
They meet in Lens today at 14:00 BST, with Wales having won their first group game and England drawing.
Many fans are staying in nearby Lille where at least 36 people were arrested on Wednesday night after clashes which saw riot police fired tear gas and charge at hundreds of England fans.
Ticketless Welsh fans have been advised to watch the match in Arras or Amiens.
Trouble first broke out earlier on Wednesday, with some English and Russian supporters being detained after scuffles.
Wales fans prepare for the match in Lens
Russian and Slovakian fans have also been in Lille after their game at the city's Stade Pierre-Mauroy on Wednesday.
It followed clashes between mainly English, Russian and French fans in Marseille at the weekend.
The Russian football team have already been given a suspended disqualification from the tournament following attacks by their supporters on England fans at their opening fixture in Marseille on Saturday.
An alcohol ban has been put in place in Lille and Lens in a bid to curb possible troubles, but Supt Steve Furnham, the Welsh Police Forces' lead for Euro 2016, told BBC Wales the alcohol ban was "very difficult to police".
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