Article from a Mississippi news source:
http://www.djournal.com/pages/story....pub=1&div=News
It's useful to note that the separate raids didn't single out a greek house. In fact it looks like far more people were arrested at the second location than at the fraternity house. Probably fair to say (again) that drugs are a problem that isn't limited to greeks. Of course, for greeks the risk management / national policy issues can be significant.