CENTENNIAL, Colo. (AP/CBS4) – The Arapahoe County Sheriff’s Office is allowing school district administrators back into the Arapahoe High School facility where a gunman shot a student at point-blank range before killing himself.

Sheriff Grayson Robinson said in a statement Monday that investigators finished their work over the weekend and gathered the evidence they needed.

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Crime scene investigators included the sheriff’s office, the Colorado Bureau of Investigation and the Federal Bureau of Investigation.

Authorities say Karl Pierson, an 18-year-old student, shot Claire Davis at point-blank range on Friday before killing himself as the result of an apparent dispute with a school staff member.

The Littleton Public Schools district has not said when classes will resume.

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Statement From Karl Pierson’s Parents, Barbara And Mark Pierson

We are shattered by the tragic events that took place on Friday at Arapahoe High School.  Our thoughts and prayers are with Claire Davis and her family.  They, and she, have suffered unimaginably, and we pray for her full recovery.  We also pray for the entire Arapahoe High School community, as we know your lives are forever changed by this horrific event. 

 As parents, we loved our son Karl dearly and we are devastated by what happened Friday.  We cannot begin to understand why Karl did what he did.  We ask for privacy during this unthinkably difficult time and hope that you will respect our need for time to grieve.  

LINK: Update From Littleton Public Schools (PDF File)

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