Flares, pitch invasions and violent disorder have all created unwanted headlines at Euro 2016.
Here are the details of the story so far with the tournament in danger of being remembered more for fighting off the field than the football on it.
French police used tear gas to disperse England fans after they clashed with locals in Marseille’s Old Port district. Footage of the incident showed men hurling chairs, a brutal fist fight outside a McDonald’s and chanting England fans surrounded by police officers with dogs.
Trouble flared in Marseille for a second successive night on the eve of England’s opening game with Russia. Flares were lit and footage of ugly scenes in an area popular with tourists showed English fans showering the police with bottles and throwing chairs out of cafes.
There were sickening scenes inside the Stade Velodrome as Russia fans appeared to charge England supporters at the end of the 1-1 draw. One England fan was left in a critical condition in hospital. As well as the serious disturbances, flares were lit and Russia were charged by UEFA with crowd disorder and racist behaviour. Earlier, there had been more clashes between the two sets of supporters in the Old Port area.
Croatia beat Turkey 1-0 for a winning start to Euro 2016 but victory was marred when a fan ran on to the pitch following Luka Modric’s goal. UEFA responded by opening up a disciplinary case against the Croatian Football Association.
England and Wales fans were caught up with violent clashes with Russia supporters in central Lille. Mobile phone video footage showed two sets of fans facing off outside a bar, with chairs strewn across the pavement on the Place de la Gare.
Russia - under a suspended disqualification from UEFA after the trouble in Marseille - came under further scrutiny as a flare appeared to be lit by their supporters during the 2-1 defeat to Slovakia. Police later used tear gas on fans following scuffles in Lille city centre.
Croatia’s 2-2 draw with the Czech Republic was halted in the 86th-minute by English referee Mark Clattenburg when several flares were thrown on to the pitch and fighting broke out in the stands. One emergency worker was nearly hit by a firecracker and Croatia boss Ante Cacic called the troublemakers “sports terrorists”.
Turkey fans lit flares and threw some firecrackers on to the field after their team’s 3-0 loss to Spain. Three Spanish “ultras” were arrested for carrying neo-Nazi banners and another three for trying to bring flares into the stadium ahead of the game.
UEFA charged both Croatia and Turkey following their games the previous evening. Croatia were charged over the setting off of fireworks, the throwing of objects, crowd disturbance and racist behaviour. Turkey face charges of setting off fireworks, throwing objects and invading the pitch.