Fifa are to investigate allegations that England striker Emile Heskey was racially abused by Croatia supporters during England’s 4-1 World Cup qualifying victory in Zagreb last week.
The Football Association lodged an official complaint with world football’s governing body after the Wigan forward was targeted during the match.
The former Liverpool player claimed he tried to ignore the ‘ignorant people’.
Heskey later branded the fans “ignorant people” and said he ignored them.
“You have to let the people above deal with that and I will carry on playing my game,” added the Wigan striker.
Croatia Football Federation spokesman Davor Gavran condemned those involved, but claimed the fans were expressing their frustration.
He said: “They seemed rather an expression of frustration from fans at how the match is going on, than an attempt to insult someone. We condemn those individual cases.”
The Croatia federation was fined 20,000 Swiss francs (€12,570) in June after European governing body Uefa ruled they showed racist conduct towards Turkey supporters in the Euro 2008 quarter-final.