Sienna Johnson, second teen in Mountain Vista shooting plot, pleads guilty to conspiracy, menacing
6 years ago
Sienna Johnson, one of two teens accused in a deadly plot to kill fellow students and staffers at Mountain Vista High School in December 2015, will serve time in state youth corrections facilities after reaching a plea deal with prosecutors.
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6 years agoSienna Johnson accepts plea deal in shooting plot
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6 years agoSienna Johnson, 2nd teen in Mountain Vista shooting plot, will spend 5 years in detention facility
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