Lazio was fined € 20,000 (£ 16,958) for racist abuse by its fans of Brescia striker Mario Balotelli.
Sunday’s Serie A game was temporarily halted and an announcement of the stadium made during the game urged fans not to sing discriminatory songs for Balotelli.
Balotelli, 29, later said that fans should be ashamed of themselves.
The Serie A judge asked the prosecutor of the Italian Football Federation for further details to decide if further sanctions are needed.
Balotelli had opened the scoring in the game, which Lazio continued to win 2-1, before fans sang racial abuse twice in the first half.
Subsequently, Lazio declared in a note: “As always, Lazio dissociates itself in the most difficult way from the discriminatory behavior conducted by a very small minority of fans during the match against Brescia.
“The club once again reiterates its condemnation for such unjust unjustified conduct and confirms its intention to prosecute those who actually betray their sporting passion, causing serious damage to the club’s image.”
Balotelli threatened to leave the field in November when he was subjected to racist abuse in a game against Hellas Verona.