In one of the photos, Natalie ‘Samantha’ Rupnow is seen wearing a T-shirt featuring a band favored by Columbine killer Eric Harris.

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Investigators are closely sifting through 15-year-old Natalie Rupnow’s social media accounts, hoping to figure out why she shot and killed a teacher and student at her school and injured six others.

Natalie Rupnow pictured with gun in shirt associated with Columbine killer - Natalie Rupnow, a 15-year-old student at Abundant Life Christian School, was encouraged to practice her weapons-handling sk

Fifteen-year-old Natalie Rupnow, a student at Abundant Life Christian School, opened fire, killing a teacher and a student, and injuring six others before reportedly dying by suicide. Police are investigating a possible manifesto and exploring multiple factors,

Police are still looking into the motive of 15-year-old Natalie Rupnow, who authorities say fired the shots at Abundant Life Christian School and then took her own life. Charlie De Mar reports.