Euro 2012 began this evening with the tournament already marred by racism.
In the run-up to the competition there had been concerns over host nations Poland and Ukraine's right wing "ultra" fans' racist behaviour.
At an open training session in Krakow, Poland, black players from the Holland squad, including Nigel de Jong and Gregory van der Wiel, were subjected to racist abuse.
Video of the training session, with monkey chants audible from the crowd, has been released:
Holland captain Mark Van Bommel reacted to the chants by leading his team to the opposite side of the pitch to train and said he would walk off the pitch if the abuse happened during a match.
Van Bommel added that anyone who denied the incident was racially-motivated to "open your ears", adding: "If you did hear it and don't want to hear it, that is even worse."
Uefa confirmed they would consider increasing the number of stewards at open training sessions in order to eject fans if there was a repeat incident.
The Dutch FA has told ITV News it has no plans to issue a formal complaint over the abuse.
A spokeswoman said that none of the players or coaches heard any racist abuse, although a few players moved to the other side of the pitch because it was too noisy.
She added that no-one has since made a complaint.
Asked whether the Dutch FA would reconsider in light of the new video, she replied "I don't think so."
The news of the racists calling has already sparked an outcry from other black player:
Jimmy Floyd Hasselbaink, Nottingham Forest first team coach and former Dutch striker said: