Virginia Tech gunman Seung-Hui Cho

NBC / AP

NBC / AP

NBC / AP

NBC / AP

NBC / AP

NBC / AP

NBC / AP

AP photo

Police identified Cho Seung-Hui, a 23-year-old "loner" from South Korea and a Virginia Tech senior, as the gunman in Monday's shooting rampage at the school. Cho killed 32 people before committing suicide, police said.

NBC / AP

NBC / AP

NBC / AP

NBC / AP

NBC / AP