The man who plotted and carried out a mass shooting at STEM School Highlands Ranch – killing student Kendrick Castillo and wounding six students in the process – was sentenced Sept. 17 to life in prison without the possibility of parole plus 1,282½ years.
Devon Erickson
Castillo was killed and six other students were shot at the school on May 7, 2019. Two additional students in neighboring classrooms were also injured.
The prosecution team consisted of Chief Deputy District Attorney George Brauchler, Chief Deputy District Attorney Christopher Gallo, Chief Deputy District Attorney Rebecca Gleason and Senior Chief Deputy District Attorney Christopher Wilcox.
The jury convicted Erickson of:
• 1 count of first-degree murder after deliberation
• 1 count of first-degree murder, extreme indifference
• 1 count of conspiracy to commit first-degree murder after deliberation
• 6 counts of attempted first-degree murder after deliberation
• 25 counts of attempted first-degree murder, extreme indifference
• 1 count of second-degree arson
• 1 count of conspiracy to commit second-degree arson
• 1 count of providing a handgun to a juvenile
• 1 count of third-degree burglary
• 1 count of conspiracy to commit third-degree burglary
• 1 count of theft
• 1 count of conspiracy to commit theft
• 1 count of possession of a weapon on school grounds
• 1 count of criminal mischief
• 1 count of conspiracy to commit criminal mischief
• 1 count of interference with school staff
• 1 count of reckless endangerment
