Woman made threats against Columbine High School, FBI says Minneapolis Star TribuneA woman is being sought after lockouts at Columbine High and other Colorado schools CNNNever forgotten: The victims of the April 20, 1999 shooting at Columbine High School 9NEWSDenver-area schools urged to go on lockout as FBI investigates ‘credible threat’ FOX 31 DenverFBI, police seek woman “infatuated with Columbine” who traveled to Colorado and is considered “armed and extremely dangerous” The Denver PostView full coverage on Google News