Administrators at a Utah high school are investigating video of five white girls screaming racially offensive and expletive chants in a 10-second video.

The video making the rounds on social media showed juniors and seniors from Weber High School screaming “f*** n****rs.” Officials were made aware of the video on Monday.

“We are shocked by the conduct of these students and the contents of the video,” a statement from the Weber School District read. “School officials have started an investigation and the matter is being taken very seriously. We are trying to determine when the video was made, where it was filmed, why the students would engage in such conduct, and how the clip ended up on social media.”

//platform.twitter.com/widgets.js

School officials said that information suggested the girls were saying a different phrase that generated the offensive phrase in video editing software that played it backwards.

“Initial information suggests that the students may have actually been saying a different phrase, something similar to ‘surgeon cuff,’” the district said. “The video was then possibly uploaded into an app that plays it backwards, producing an entirely different sounding phrase. In this case, a very derogatory, offensive racial slur.”

While three of the girls have been confirmed to be cheerleaders, it is not clear if the video was filmed on the school’s campus.

The school has not yet determined how the girls will be disciplined, but they could be expelled or at least kicked off of the squad.

“All of those things would be on the table,” Weber School District spokesman Lane Findlay told the Deseret News. “Obviously, they knew what they were doing. It’s just completely inappropriate.”