The 24-year-old admitted today that he entered the electrical engineering building on January 21, with a gun and a knife.
He then told the court he entered the basement classroom and shot 21-year old Andrew Boldt and then stabbed with with the knife.
Cousins said killing Boldt was his intent but did not discuss his motive.
Copyright 2015 Nexstar Broadcasting, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.