Five years after the killings, the FBI said they believe that Harris was a clinical psychopath who masterminded the plan and Klebold depressive.

枪击案发生五年之后，联邦调查局表示相信哈里斯有精神变态的临床症状，他一手策划了杀人计划，并利用了克莱伯德的抑郁症状态。