Members of University of Oklahoma’s now-shuttered chapter of Sigma Alpha Epsilon learned their slur-laced racist chant at a “national fraternity leadership cruise,” four years ago, Huffington Post reported.

The university kicked SAE off its campus shortly after video surfaced early this month showing members of the fraternity singing, “There will never be a n***** in SAE.” Now, the university’s learned that OU students brought the chant back to their campus and adopted it into the chapter’s frat culture after picking it up at a national fraternity event. Since the University of Oklahoma video was released, students at four other universities have admitted knowledge of the song.