French President Emmanuel Macron is calling for "full transparency" over the chaos that marred Saturday's Champions League final between Real Madrid and Liverpool in Paris.
The match was delayed as Liverpool fans queued outside the stadium.
French police used tear gas and pepper spray on some supporters.
Authorities blamed ticket fraud and the sports minister said Liverpool had let fans "out in the wild". But Liverpool fans contested her version of events.
They blamed organisational failures, heavy-handed policing and overcrowding, while club chairman Tom Werner demanded an apology for minister Amélie Oudéa-Castera's comments.