Den Bosch have apologised to Jozy Altidore after a section of their fans racially abused the AZ Alkmaar striker in Tuesday night's KNVB Beker match, and promised to catch and punish those responsible.
The American was subjected to monkey chants in the first half of the match which AZ went on to win 5-0.
The game was stopped by referee Reinold Wiedemeijer, but Altidore himself asked for it to be continued and he scored with a penalty. He has won praise for his calm response to the situation.
Den Bosch issued a statement on their official website branding those fans who abused him "hooligans" and saying they had "ruined the week-long preparation by the club, supporters and volunteers" to get the game on despite the bad weather.
They said the club was "upset and disappointed" at the abuse which left "scars" on the club.
Den Bosch director Peter Bijvelds, who had addressed the crowd at half-time with an appeal for the abuse to stop, said: "FC Den Bosch will, aided by all those people who do good for their club, do everything in their power in the coming period to bring the perpetrators to justice.
"They do not belong in De Vliert (the Den Bosch stadium) and will have the most severe sanctions imposed on them."
Den Bosch fans also caused trouble in the second half, with the match halted again when snowballs were thrown at an official.
Altidore said after the match that he felt it was right to continue playing and not to respond to the insults.
He said: "I feel like I have an obligation as a football player, to my club, to my family, to not react to things like this and to show that the club stands better than that, that I was raised better than to respond to such ridiculous behaviour.
"It's a bit disappointing. You would hope that we as humanity we can grow from these kind of times but at the end of the day, it's still alive, racism.
"All we can do is try to educate ourselves, and try to raise young kids to be better than that."
In atrocious conditions of driving rain and a strong wind, both teams came close to breaking the deadlock with O's 'keeper Jamie Jones fully extended to deny Alan McCormack's long-range effort.
Robins striker Andy Williams hit the crossbar, while Town stopper Wes Foderingham produced a splendid save to deny substitute Jimmy Smith's full-blooded drive from 10 yards.
"I'm very disappointed," the Italian said. "We have to step back and look at ourselves in terms of desire even if we did look like the better team in the first half. I am talking in terms of individuals, not the whole team.
"The pitch was not good but we played some good football and we should have scored a goal. We created a few chances but when you don't score, you have the risk of losing.
"From the fans point of view, they probably think there is nothing wrong because we are making chances but I'm very disappointed with some of the players and I will tell them who and why and obviously we will have a look at the situation."
Di Canio also admitted he needs to dip into the transfer market before Thursday's deadline to boost his attacking options.
He said: "We need to go into the transfer market. I need to play players with genuine attitude. We look like a team that will score.
"I will work very hard myself with these players that we have, the substitutes were absolutely very bad. Always I can blame them but I also have to blame myself because I have to make sure that someone I bring into the game has to give their best.
"But I will make my decisions in terms of the squad."