Alec McKinney has pleaded guilty to first-degree murder in a 2019 shooting at a STEM school.
A Colorado program for juveniles convicted as adults could allow him to serve as few as 20 years in prison, if he meets a long list of criteria.
Jury takes half a day to return guilty verdicts for STEM School shooter
A Douglas County jury returned guilty verdicts for Devon Erickson, one of the STEM School Highlands Ranch shooters, after beginning..
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