William Massello, the assistant state medical examiner in Roanoke, said Cho died from a self-inflicted gunshot wound to his head after firing enough shots to wound his victims more than 100 times.

• 1991年就读于美国爱阿华大学的中国博士留学生卢刚开枪杀死包括自己导师在内的5名教师和同学，最后饮弹自尽。