Two fraternities have been suspended at North Carolina State University during investigations of sexual assault and drug allegations against one and an inappropriate book linked to the other.

Multiple media outlets report that Alpha Tau Omega has been suspended by the university after a student said she saw illegal drugs and was sexually assaulted at the fraternity house earlier this month.

Fraternity CEO Wynn Smiley says drug paraphernalia belonged to a pledge who's been kicked out.

Pi Kappa Phi has placed its NC State chapter on interim suspension pending an investigation of an apparent pledge book found at a nearby restaurant. The book contains racially and sexually charged remarks and derogatory comments about women.

Fraternity CEO Mark Timmes said in a statement that the comments are offensive.