Italy coach Cesare Prandelli played down the racist incident aimed at Balotelli at the pre-World Cup training camp but striker Ciro Immobile said players have to help stamp out the scourge.
AC Milan striker Balotelli was believed to be the target of a racist insult from a youth as players were put through their paces during the second day of a ten-day training camp at Coverciano in Florence.
When asked about the incident, Prandelli said: "I didn't hear what was said. All I heard were pleasantries."
Police stationed at the national team centre intervened and although the incident did not appear to faze Balotelli the striker hit out afterwards.
"Only in Rome or in Florence do you here these kinds of things," said Balotelli, who has been subjected to racist taunts sporadically during his Serie A career.