9.4 Major Case Considerations: Homicide, Missing Persons & Officer-Involved Incidents

Major Case Considerations: Homicide, Missing Persons & Officer-Involved Incidents

Unit VII.D — Major Case Considerations (6 required hours) covers the incidents where the patrol officer's decisions in the first ten minutes cannot be undone. Homicides, child abductions, and officer-involved shootings all share one feature: an enormous investigative apparatus arrives later and can only work with what the first officer preserved.

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1. The First Officer's Role in Any Major Case

   CONTAIN   →   PROTECT   →   LOG   →   IDENTIFY   →   HAND OFF
      |            |           |          |             |
  perimeter,   scene not    every       witnesses,   full briefing
  no entry,    disturbed;   entry       suspects,    to the case
  no exit      nothing      recorded    vehicles,    agent, in
               moved                    video        person

The temptation in a major case is to do more. Resist it. The most valuable major-case skill a patrol officer has is the discipline to establish a wide perimeter, keep everyone including supervisors out of it, and write down who came and went.

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2. Homicide and Death Investigation

Confirm death, then stop. If death is not obvious, render aid; if it is obvious, do not disturb the body. Document the route paramedics took in and out, everything they moved, and everything they left behind — defibrillator pads, packaging, IV wrappers.

The coroner's authority. In Colorado the county coroner has jurisdiction over the body and determines the cause and manner of death. Law enforcement investigates the crime; the coroner investigates the death. Officers do not move, roll, or search a body without coordinating with the coroner or medical examiner's investigator.

Manner of death is classified as natural, accident, suicide, homicide, or undetermined. That classification is not the officer's to make in a report — describe what was observed.

Scene documentation priorities. Establish a single path in and out, photograph before anything moves, note ambient conditions (temperature, lighting, HVAC, doors and windows open or closed, appliances running), record the body's position and apparent lividity and rigidity as observations only, protect the hands (paper bags, not plastic, if directed by the investigator), and identify the last person to see the decedent alive.

Suspicious death indicators include inconsistencies between the reported story and the scene, staged appearance, defensive injuries, a weapon in an implausible position, cleaned areas, and missing items.

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3. Missing Persons

There is no waiting period. Colorado law requires agencies to accept a missing person report immediately, regardless of the missing person's age or how long they have been gone, and to enter the record into NCIC without delay. A dispatcher or officer who tells a family to "wait 24 hours" is stating a myth that Colorado law rejects.

Risk assessment drives the response level:

Immediate patrol steps: search the residence thoroughly — including under beds, in closets, appliances, and vehicles, since young children hide and are found in the home in a substantial share of cases; obtain a current photograph and a detailed clothing description; secure the person's electronics and social media identifiers; request a ping or exigent location request from the carrier where the criteria are met; canvass; and enter NCIC.

Colorado's statewide alerts are administered by the Colorado Bureau of Investigation and require specific criteria and a requesting agency:

Officers must know that an alert is a resource request with criteria, not an automatic step. Requesting one requires a description specific enough to be actionable.

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4. Child Abduction Response

The first three hours are decisive. Colorado agencies apply the widely adopted child abduction response framework: verify the abduction, secure and search the immediate scene, establish a perimeter, interview the reporting party and family separately, obtain and broadcast a description, evaluate AMBER Alert criteria immediately, request CBI and FBI assistance early rather than late, and treat the home as a crime scene rather than a command post.

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5. Officer-Involved Shootings — C.R.S. 16-2.5-301

Colorado does not allow an agency to investigate its own officer-involved shooting alone. C.R.S. 16-2.5-301 requires each law enforcement agency and district attorney to have a written protocol for the location and investigation of incidents in which a peace officer's discharge of a firearm results in injury or death, and that protocol must involve at least two investigating agencies, one of which is not the agency employing the involved officer. The statute also requires that the district attorney's decision on whether to charge be released as a public decision letter.

What that means for the first responding and involved officers:

Do not let involved officers confer. Officers who discuss the incident before providing statements create an irreparable contamination problem, and the multi-agency structure exists precisely to make that visible.

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6. Case Handoff

A major case briefing is verbal and in person, then written. Cover: what was reported and by whom; what you personally observed; the perimeter you established and when; everyone who entered and exited; every witness and where they are now; every item you saw and did not move; every camera you identified and whether it was preserved; and every investigative step you started but did not finish. Then write the report the same day, while the detail is intact, and reference the BWC files.