Later that day it was discovered that Castillo had killed his father to " put him out of his misery . " He also made the statement " Columbine , remember Columbine , " while entering a patrol car. , referring to the attack at Columbine High School in Colorado in 1999 . He sent a written letter and videotape to the Chapel Hill News prior to the shooting , that made reference to school shootings . He also sent an e-mail to the principal of Columbine High School saying " Dear Principal , In a few hours you will probably hear about a school shooting in North Carolina . I am responsible for it . I remember Columbine . It is time the world remembered it . I am sorry . Goodbye . " Castillo entered a plea of not guilty by reason of insanity . Psychologist James Hilkey testified that Castillo suffered from schizotypal and obsessive-compulsive personality disorder , as well as major depressive disorder and was not in touch with reality at the time of the shooting . On August 21 , 2009 , Alvaro Castillo was found guilty in Orange County Superior Court following a trial that lasted three weeks . He was sentenced to life in prison with no chance of parole
attack at Columbine High School
Columbine High School massacre
Orange High School (North Carolina)