http://v.mercola.com/blogs/public_blog/Could-Antidepressants-Explain-the-Virginia-Tech-Massacre--10928.aspx
It is interesting to note that to date the widely reported school shootings, Columbine etc, were all committed by people on phsychoactive prescription drugs. I haven't heard if this latest incident was related to an antidepressant but with his history of mental illness it seems likely.:(