Updated December 18, 2020 6:07 p.m. EST By Sarah Krueger, WRAL Durham reporter Chapel Hill, N.C. — A day after federal investigators linked a drug trafficking ring to three fraternities on campus, the University of North Carolina at Chapel Hill suspended recognition of the groups. The university issued a statement saying, "We are taking swift action today because the serious nature of the alleged criminal behaviors is contradictory to our code of conduct and endangers the health of our student body and community." Twenty-one people face federal drug trafficking charges, and prosecutors said at least 11 of them are believed to be current or former students at Appalachian State University, Duke University or the University of North Carolina at Chapel Hill.