French authorities were checking the identities of 29 supporters at a hotel in Mandelieu - La Napoule near Marseille .
Authorities have already decided to take some of them to a holding centre at the border .
French authorities were checking the identities of 29 supporters at a hotel in Mandelieu - La Napoule near Marseille and authorities have already decided to take some of them to a holding centre at the border .