I ave been checking the local papers about this. A July 19 article has information about the assault as well as details as to how the hazed students were recruited.
http://www.southernminn.com/faribault_daily_news/news/article_99b21d9f-8ccc-5677-a3e7-9a509135bf0c.html
If your student ever receives anonymous messages to meet behind a building at 2 a.m., tell them it is a bad idea.