Romelu Lukaku completed a last-minute Inter comeback to beat Bologna, but the hosts were furious at the penalty award.
Roberto Soriano had put the Rossoblu in front with the aid of a slight deflection off Stefan de Vrij.
However, the Belgian striker took charge in the second half, meeting an assist from Valentino Lazaro and converting the stoppage-time spot-kick earned by Lautaro Martinez.
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