French police moved onto the streets of Lille to keep order on Wednesday as tens of thousands of Russian, English, Welsh and Slovak fans arrived for the latest round of high-risk Euro 2016 football matches. Authorities fear that Russia’s game against Slovakia on Wednesday followed by a key England-Wales clash in the nearby city of Lens on Thursday could trigger a new bout of street fighting. A police spokesman said seven arrests were made during the night, mainly to stop fights erupting between rival groups of fans. They included two Russians held over tensions in a cafe where chairs and bottles were hurled and two Ukrainians accused of carrying prohibited weapons, the spokesman said. “There were three cases of brawls between small groups starting between midnight and 1 am but these were quickly broken up.” Pitched battles erupted on the streets of Marseille on Saturday between Russian and English fans, the worst violence at an international football tournament since the 1998 World Cup. Violence also flared in the stadium following their 1-1 draw, prompting UEFA to warn Russia it would be thrown out of the European Championship finals if there was more trouble. French authorities said 4,000 police and gendarmes