Tear gas has been used against football fans in Lille amid reports of renewed clashes at the Euro 2016 tournament.
It has not been made clear which team’s fans were involved. England fans have gathered in the city ahead of their match in nearby Lens against Wales.
Russian and Slovakian supporters are also in Lille, after their match at the city’s Stade Pierre-Mauroy.
The fans were then pushed back into the corner of the square by police in riot gear, he said, adding the situation now appeared to have calmed down.
England fan Oliver Larkworthy from Norwich is in Lille and was caught up in the tear gas, which was fired at the city’s railway station.
“I saw a massive crowd running down the street – English fans, Slovakian fans and locals mainly, a real mix,” he said.
“There is a massive mob of Russian fans standing outside the station just waiting to cause trouble. The whole thing is a disaster waiting to happen. It’s like a massive tinder box waiting to go off any minute.”
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. Six England fans were jailed following Russia and England’s draw in Marseille on Saturday.
Michel Lalande, prefect of the Nord-Pas-de-Calais Picardy region, said a drinking ban was in place some parts of central Lille and the stadium.
Shops selling alcohol in the city closed from 18:00 local time (17:00 BST) on Tuesday and will reopen at 06:00 (05:00 BST) on Friday, he said.