Inter coach Luciano Spalletti slammed the alleged racist chanting aimed at Napoli defender Kalidou Koulibaly during his team's 1-0 Serie A win on Wednesday.
Carlo Ancelotti claimed Napoli asked for the match at San Siro to be suspended on three separate occasions due to the chanting, but no action was taken.
Koulibaly was sent off after picking up two yellow cards before Lautaro Martinez scored a stoppage-time winner for Inter , and Lorenzo Insigne also saw red late on for Napoli.
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After the match the defender took to social media to send a defiant message , saying: "I'm disappointed by the defeat, but above all at leaving my brothers.