Roma and Inter have been fined €50,000 after fans chanted racist abuse on the final day of Serie A on Sunday, hours before Fiorentina supporters heckled Milan’s black striker Mario Balotelli.

The three racism incidents have underlined Italy’s serious problem with discrimination in soccer, which shows no sign of being eradicated despite renewed efforts from the authorities.

Serie A said in a statement yesterday that Roma would also have to close the Curva Sud section of their stadium for one game at the start of next term after the abuse during their clash with Napoli.

The statement said Inter, already fined €50,000 ($64,300) for racist chants towards Balotelli in February, had only been punished with the same fine for abuse at their game with Udinese but with a warning over their fans’ future conduct.

Balotelli, who made his name at Inter as a teenager and is famous for his idiosyncratic antics on and off the field, has been a long-time target of racist abuse in Italy and moved to England’s Manchester City partly to get away from the hatred.

The Italy striker returned to Milan in January and has been a big success, scoring a controversial late penalty on Sunday which helped Milan win 2-1 at relegated Siena and take third spot and a Champions League playoff berth off a furious Fiorentina.

As Milan’s team bus passed through Florence on its way back from Siena in the early hours of Monday, a group of Fiorentina fans shouted racist abuse, prompting Balotelli to take to Twitter to complain.