The University of Oklahoma is investigating one of their on-campus fraternities after a video of members of the frat singing a racist song was posted online and went viral.

According to Tulsa World, the national president of the Sigma Alpha Epsilon fraternity said Sunday evening that the OU SAE chapter has been given an immediate cease and desist order just hours after the video appeared online.

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In the brief video, posted on Twitter by a group of black students called OU_Unheard, the frat brothers can be heard singing and clapping along to a song with the repeated lyrics of “There will never be a n****r SAE,” along with a line about lynching, “You can hang them from a tree (inaudible)”.

The cease and desist order comes hours after OU President David Boren opened an investigation into the fraternity after seeing the video.

From his own Twitter account, Boren tweeted: “If the video is indeed of OU students, this behavior will not be tolerated and is contrary to all of our values. We are investigating. – DBo”

Watch the video below, posted to Twitter by OU_Unheard:

Racism is alive at The University of Oklahoma. @President_Boren pic.twitter.com/eAvnPD8jxA — Unheard (@OU_Unheard) March 8, 2015

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UPDATED:

Sigma Alpha Epsilon’s national headquarters has issued a statement stating they have shut down the OU chapter:

While we correct our server issues, here's our statement. pic.twitter.com/yOBqubcLFO — Sigma Alpha Epsilon (@sae1856) March 9, 2015

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Late Sunday night the frat house was vandalized with the words “Tear it down” spray-painted on the building:

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