Texas A&M University says an “abhorrent” viral video of a student using the n-word during a fake biology lesson will be investigated, despite the man’s public apology.

The student, whose name the College Station university did not release, made the video for Snapchat and from there, it was shared on Twitter. Wearing an unbuttoned blue shirt, he holds a beer bottle and stands in front of a chalkboard, assigning the n-word ending with “er” for black people and the n-word ending with “a” for people of mixed races. He then used a slur to describe white children born to black couples. A male and female classmate were also featured in the video.