Black players from AC Milan's Under-10 team have suffered racial abuse at a youth tournament in Italy, according to the Serie A club.
The incidents were said to have happened during their 4-0 win over Paris Saint-Germain in the quarter-finals of the Universal Cup on Sunday.
A statement on the Milan website said: "There was alleged incidents of racism from certain 'people' in the stands towards Milan's black players.
"We do not wish to magnify the issue, but truly hope that these reports aren't true or that it was simply a sporadic incident. If they were to be confirmed, then it would be simply unacceptable."
Chelsea, Ajax, Inter Milan, Roma and Juventus are among the other teams taking part in the tournament.
