In a case that Thackeray investigated last year, she tracked down a Phoenix man who harassed his ex-girlfriend by posting personal ads in a Phoenix community Web site.

CNN: Feds find dangerous cyberstalking hard to prevent

Phoenix police eventually arrested the man.

CNN: Feds find dangerous cyberstalking hard to prevent

Phoenix, Arizona (CNN) -- Phoenix police were searching Wednesday for a 70-year-old man suspected in the shooting of three people, one of whom died, in an office building.

CNN: Suspect sought in fatal Phoenix office shooting