UEFA have charged the Croatian Football Association for racist chants aimed at Italy striker Mario Balotelli.
The governing body have decided to act after certain sections of Croatia fans were heard monkey chanting at the Manchester City frontman during Thursday's 1-1 draw in Poznan.
"UEFA has opened disciplinary proceedings against the Croatian Football Federation for the setting-off and throwing of fireworks, and the improper conduct of supporters (racist chants, racist symbols) at the UEFA Euro 2012 Group C match against Italy in Poznan on Thursday," read a UEFA statement.
"The UEFA Control and Disciplinary Body will deal with the case on June 19."
The Croatian FA are likely to be fined if found guilty.