The killer behind America's deadliest mass shooting had come to the attention of police as early as 2005, the Guardian learned yesterday. Cho Seung-hui was revealed to be a troubled loner of South Korean descent who left behind a disturbing note of grievances against his university saying: "You caused me to do this."Police investigating the Virginia Technical College massacre, which left 33 dead, mainly students, blamed Cho, a fourth-year English student who lived on the campus, for earlier incidents ranging from stalking women to setting fire to a dormitory. The police suspect he was also behind persistent recent bomb threats.
Professor Lucinda Roy, a former head of the English department, said Cho had caused alarm in 2005 for taking illicit mobile phone photographs of women from under the desks and writing an essay brimming with rage.
At the time, she emailed Cho expressing her concerns and also contacted campus police, the legal department and counselling services. Cho responded with a long, angry and incoherent email.
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