JEFFERSON -- Video has surfaced from the controversial Dover and Jefferson basketball game on Friday during which members of the Jefferson crowd shouted racial remarks at an African-American player on the Dover team and "Build the wall" during their pre-game warm-ups.

The incident came to light Monday when Jefferson Superintendent Patrick Tierney apologized after students "allegedly made racist and/or offensive statements directed at the Dover athletes" during Friday's game. Dover Superintendent Robert Becker issued a statement hours later in which he identified two of those statements, saying Dover students chanted "ashy knees" at a player, as well as, "Build the wall."

Video obtained by NJ Advance Media shows several instances of members of the Jefferson crowd shouting "ashy knees" when an African-American player steps up to the free throw line for several foul shots. Occasionally, one area would shout "ashy," and the other area would follow with "knees."

The theme for the night was American pride, and several people in the video were dressed in clothes featuring the American flag -- and one member of the crowd waved a full-sized American flag. Earlier chants combined with the flags, upset some Dover parents.

Michael Moore, a parent of a Dover High School basketball player, told NJ Advance Media he believed the Jefferson crowd's intent was to disparage Dover -- a town with a significant Hispanic and African-American population.

"Their intent was disrespect," he said. "Not to promote the country as a whole."

Moore, who was in attendance at the game, said he placed the blame on the adults in the Jefferson group as they "allowed this and put this together."

Moore said the entire game was marked by "a lot of hard fouls, dirty fouls." At one point, he said, a Jefferson player fouled a Dover player and stood over him "for an excessive amount of time" in order to intimidate him.

Moore added that the player who was targeted by the Jefferson crowd during his foul shots "maintained his composure" and handled the situation "like a saint."

Tierney, the Jefferson school superintendent, said the America theme was picked by the student body two weeks before the game when the team was originally scheduled to play Mountain Lakes. He disputed the claim the theme was politically motivated.

"We are currently doing the investigation," he said. "There has been no discipline (of students) administered at this point."

Tierney said his students were wrong to chant racist remarks at a member of the Dover team. But, he added, he believed there was provocation on the Dover side.

"I'm not excusing this incident, but to say it was a one-sided incident is completely misleading," he said.

Tierney alleged two Dover parents approached a Jefferson student who was wearing a Trump shirt before the game and made inflammatory remarks. That student then allegedly shouted, "Build the wall," he said. Tierney disputed claims more than one student chanted "Build the wall."

"I'm not excusing the comments or behavior of my children," he said. "In my experience, kids who show up to cheer on games aren't bad kids. These kids have school spirit and they got caught up in the moment and they said something stupid."

Tierney said he believed the controversy was "a microcosm" of the current political climate and "a bigger, more complex issue than Dover and Jefferson."

The NJSIAA, in response to this incident, has told Dover and Jefferson to work out a solution amongst themselves.

"The schools have been instructed to meet and come forward with appropriate action plans to satisfy both the letter and spirit of the NJSIAA sportsmanship policy," the statement said. "If they are unable to fulfill that obligation, the matter will go to the controversies committee of their own conference, the New Jersey Athletic Conference. If necessary, NJSIAA will convene its controversies committee, which will intercede as necessary."

A message left for Becker on Thursday morning hasn't yet been returned.

Prior coverage by Jeremy Schneider and Rich Greco was used in this article.

Justin Zaremba may be reached at jzaremba@njadvancemedia.com. Follow him on Twitter @JustinZarembaNJ. Find NJ.com on Facebook.