World football s ruling body FIFA on Thursday fined the Croatian Football Federation 30,000 Swiss francs after Croat fans racially abused England striker Emile Heskey during a World Cup qualifier.
FIFA warned that further infringements would lead to more severe sanctions .
En route to an eventual 4-1 victory for England earlier this month, Heskey was taunted with monkey chants from a section of the Maksimir Stadium in Zagreb when he was booked for fouling Niko Kovac.
England s Football Association then took the case to FIFA.
It is not the first time Croatia s fans have been sanctioned for racist abuse.
Croatia had to pay a small fine during Euro 2008 for racist abuse from their fans during their game against Turkey.