The fired LAPD officer who killed four people during a vengeance-fueled murder spree last year was also stalking the father of LA Police Chief Charlie Beck, Beck told NBC News in an exclusive interview.
For 10 days in February 2013, former officer Christopher Dorner waged what he called "unconventional and asymmetrical warfare" against those he blamed for his dismissal from the force four years earlier.
Dorner killed a police officer, a San Bernardino County sheriff's deputy and an Irvine couple that included the daughter of his lawyer before he died of a self-inflicted gunshot wound at his mountain hideout.
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Full Coverage: Dorner's Murderous Rampage
Dorner had posted a manifesto on his Facebook page threatening to avenge his firing, and wrote to his targets, "I know your route to and from your home, and your division. I know your significant other's routine, your children's best friends and recess."
Investigators now confirm that there was "journaling related to specific targets," including the family of LAPD Capt. Phil Tingirides, who was on the disciplinary board that dismissed Dorner, and Chief Beck's father, retired LAPD Deputy Chief George Beck.
Read the full story at NBCNews.