COLUMBIA, S.C. (AP) The father of a former NFL player who fatally shot six people before killing himself two years ago is suing the alma mater where his son played football.

An autopsy eventually diagnosed Phillip Adams with an unusually severe form of the degenerative brain disease commonly known as CTE that has been shown to cause violent mood swings and memory loss.

Now, Alonzo Adams says South Carolina State University did not follow safety protocols or properly train employees to treat the sustained head trauma that his son suffered during a college career that lasted from 2006 to 2009.