A video is currently being probed by University of Oklahoma in which members of Sigma Alpha Epsilon fraternity are allegedly shown singing racist language, the school's president said.

"If OU students are involved, this behavior will not be tolerated and will be addressed very quickly," OU President David Boren said in a tweeted statement, adding that confirmation would cause him to ban the fraternity chapter from campus. "This behavior is reprehensible and contrary to all of our values."

The video shows students who appear to be on a bus singing, "There will never be a n****r in SAE."

Brad Cohen, national president of Sigma Alpha Epsilon, tweeted late Sunday that "we have now closed the chapter and will expel all those involved."

"We apologize for the unacceptable and racist behavior of the individuals in the video, and we are disgusted that any member would act in such a way," SAE's national headquarters added in a statement.

"Furthermore, we are embarrassed by this video and offer our empathy not only to anyone outside the organization who is offended but also to our brothers who come from a wide range of backgrounds, cultures and ethnicities.

The police visited the frat house on Sunday as a precaution but a message was spray painted on the building shortly after a police man left the place to respond to another call.

According to Unheard, a Black student group on Oklahoma's campus, the video "contains language that is offensive, disrespectful and unacceptable."

"We still have a reason to march," the statement added, referencing the 50th anniversary of a bloody confrontation in Selma between police and peaceful protesters seeking voting rights for blacks.