03/28/2008 02:44 am ET Updated May 25, 2011

Killer's Note: "You Caused Me To Do This"

Cho Seung-Hui, the 23-year-old student who killed 32 people and then himself yesterday, left a long and "disturbing" note in his dorm room at Virginia Tech, say law enforcement sources.

Sources have now described the note, which runs several pages, as beginning in the present tense and then shifting to the past tense. It contains rhetoric explaining Cho's actions and says, "You caused me to do this," the sources told ABC News.

Read more on ABC News