Sometime after he killed two people in a Virginia university dormi

tory but before he slaughtered 30 more in a classroom building,

Cho Seung-Hui mailed NBC News a large package including ph

otographs and videos Monday morning, boasting, “When the tim

e came, I did it. I had to.”

Cho, 23, a senior English major at Virginia Polytechnic Institute

and State University in Blacksburg, killed 32 people in two attac

ks before taking his own life.