The prefect for Saint-Etienne has blamed UEFA for the crowd trouble at the match between Croatia and Czech Republic at Stade Geoffroy Guichard.
Evence Richard, the top official in the Saint-Etienne area, told local media that UEFA should have added "between 150 and 200" security agents at the stadium "to properly fulfil its mission."
Play was stopped for several minutes late in Croatia's 2-2 draw with Czech Republic on Friday when firecrackers and lit flares were thrown on the field from one end of the stadium where Croatian fans were sitting.
Croatia fans then fought among themselves as players appealed for calm and French police were forced to intervene.
One Croatia fan who smuggled a flare into the arena was arrested and will be brought before a judge next week.
Richard said: "The fans were allowed to enter the stadium 30 minutes late, there was one gate which remained closed during the whole evening and between 2,000 and 3,000 spectators had not accessed the stadium when the match started."
UEFA has opened a disciplinary case against Croatia's national football federation following the incidents.
Meanwhile the Hungarian football federation will also be subject of a disciplinary case for fan disorder inside the stadium during their match against Iceland in Marseille and charges over the setting off of fireworks and throwing of objects have also been levelled at the Royal Belgian Football Association after their 3-0 victory over Republic of Ireland.
The Portuguese football federation was also fined after a pitch invasion during their clash against Austria, in which a lone fan wandered onto the pitch, seemingly in search of a selfie with Cristiano Ronaldo.