Holland's black players were allegedly subjected to monkey chants during an open training session in Krakow on Thursday night, with captain Mark van Bommel branding the abuse "a real disgrace" on the eve of Euro 2012.
The Oranje players were allegedly targeted by Polish fans as they began their practice session at the Stadion Miejski.
Van Bommel, who along with his team-mates visited Nazi German concentration camp Auschwitz yesterday, responded by leading the Dutch squad to the far side of the pitch, before hitting out at the perpetrators and vowing to take the matter to UEFA.
Quoted in several newspapers, the PSV Eindhoven midfielder said: "It is a real disgrace, especially after getting back from Auschwitz, that you are confronted with this.
"We will take it up with UEFA and if it happens at a match we will talk to the referee and ask him to take us off the field."
He added: "You need to open your ears. If you did hear it, and don't want to hear it, that is even worse."