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Ponderosa High School Campus Security Specialist Arrested for Sex Assault

NARRATIVE: DOUGLAS COUNTY, CO – At approximately 5:30 p.m. on November 28, 2016 the Douglas County Sheriff’s Office received a report of a sex assault that occurred at Ponderosa High School, located at 7007 Bayou Gulch Rd., Parker, CO 80134.

Detectives interviewed the victim, a student at Ponderosa High School, and determined that there was enough probable cause to make an arrest of Douglas County School District Campus Security Specialist Gary Postell.

Postell, a 49 year old Castle Rock resident was immediately taken into custody at his residence and booked in the Douglas County Detentions Center on suspicion of Sex Assault on a child by one in a position of trust (CRS 18-3-405.3) and is being held on a $5,000 bond.

This is an open and active investigation; a booking photo will not be released at this time.

Questions about this case will be directed to the 18th Judicial District Attorney’s Office.

If you have any information about this case or any other information that may assist us in this investigation please contact Detective Williamson at 303-814-7005 or