Italy coach Roberto Mancini has called for authorities to act "harshly" against "unbearable" racists who targeted Juventus forward Moise Kean on Tuesday.
Kean received abuse from Cagliari fans after he scored the second goal in the Old Lady's 2-0 Serie A win, and the attack followed a number of similar incidents in Italy this season.
The 19-year-old's team-mate Leonardo Bonucci sparked outrage after the game when he claimed Kean was partly to blame for celebrating in front of the home fans.
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But Kean's international manager, Mancini, has stood by the forward and called for a clampdown on racism in the stands.