MINNEAPOLIS (WCCO) — Officials at a Twin Cities high school say a teacher has been placed on administrative leave after students posted an alleged video of him using a racial slur in class.

District 622, which includes North High School in North St. Paul, said Sunday that an investigation is underway and that racism will not be tolerated.

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The video was brought to the district’s attention after students of color at the high school created an Instagram page to highlight racial injustice at the school.

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The group’s first post Saturday said that a health teacher at the school used the n-word and made other racist remarks to students of color in class. Another post included a video of the teacher apparently saying the n-word in front of students.

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The students behind the Instagram page are calling for the teacher to be fired.