AC Milan have condemned the alleged racist taunts aimed at Franck Kessie and Tiemoue Bakayoko by Lazio fans in Wednesday's Coppa Italia match.
It is claimed the two Milan midfielders were subjected to monkey chants during the game at San Siro, which the visitors won 1-0.
There were also reports of inflatable bananas being held up in the away section, while a group of ultras are said to have erected a banner in the streets in the hours before the match praising former facist dictator Benito Mussolini.
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In a statement released on Thursday, the club said: "AC Milan wants to reiterate its condemnation of all forms of racism and discrimination following the incidents of last night's Coppa Italia semi-final second leg game between AC Milan and SS Lazio.