The shooter was 23-year-old Virginia Tech senior and English major, Seung-Hui Cho. Cho was born in South Korea, but became a permanent U.S. resident in 1992. He had a history of mental health problems including depression and an anxiety disorder. During his years at Virginia Tech, he was investigated for stalking and harassing two female students, and some of his professors reported disturbing writing in assignments. In 2005, he was ordered by a state judge to seek outpatient treatment for such problems.
Two hours after the first shooting, Cho mailed a package of writings, photographs, and video recordings explaining his actions to NBC News. Some of these communications were released to the public.
At 9:45 AM, Cho entered Norris Hall, the engineering science and mechanics building, and took the lives of 32 people, as well as himself.
Thirty-two small stones served as a temporary memorial to those killed by Cho, placed by a student group right after the massacre. The original stones numbered 33; however, the stone meant for Cho disappeared, and was not added to the permanent monument. The dirt path worn down in front of the stones was replaced three months later with a stone walking path, and the stones were replaced with a semicircle of new, 300-pound stones engraved with each victim's name. The stones are Hokie Stone, or dolomite, named for the university and quarried by it. Planted at the memorial are holly bushes.
The memorial also features a larger, center stone to honor all those killed and injured in the shooting rampage. It is engraved with the message, We are Virginia Tech. We will prevail.