The Virginia Tech massacre was a school shooting that took place on April 16, 2007 on the campus of Virginia Polytechnic Institute and State University, Virginia Tech,  in Blacksburg, Virginia, United States.

In two separate attacks, approximately two hours apart, the perpetrator, Seung-Hui Cho, killed 32 people and wounded many others[1]  before committing suicide. The massacre is the deadliest peacetime shooting incident by a single gunman in United States history, on or off a school campus.

Cho, a senior English major at Virginia Tech, had previously been diagnosed with a severe anxiety disorder. During much of his middle school and high school years, he received therapy and special education support. After graduating from high school, Cho enrolled at Virginia Tech.

Due to federal privacy laws, Virginia Tech was not informed of Cho's previous diagnosis or the accommodations he had been granted at school. In 2005, Cho was accused of stalking two female students; after an investigation a Virginia special justice declared Cho mentally ill and ordered him to attend treatment.[3] At least one professor had also asked Cho to seek counseling. From Wikipedia.