(Pennsylvania State Police: TROOPER)
- Look up coverage and law enforcement
- Review non-tragic deaths (i.e. Amber Alert (missing person)- MIPA (elder person wanders off)
- Troops A – T
Criminal Investigations
Troop F-
Patrol and Criminal Investigations
Initial officers - First responders
1) Clear the scene
2) Establish crime scene perimeters
3) Await for investigators arrival and forensic services
Investigators Arrival:
Briefing by first responders
Initial walk through (point to point ) less likely to be used by perp.
PHOTOS/VIDEO, SKETCH, TOTAL STTION MAPPING, COLLECT trace/perishable evidence likely to be lost/moved, note initial observation (lights/doors/windows, etc)
Examine the body (lividity, rigor, algor, decomposition, entomology)
Why is time of death important
Presumptive Determination of death (Cause/Manner
Understanding the scene
Pieces of the puzzle, most times work backwards
Slooooow and methodical – everything can become important to the case later on?
Most instances…once the scene is cleared or left evidence can and will be disturbed (and may no longer be accepted as having evidentiary value)
Why?
1) Specific intent: drugs, money and sex
2) ?????
Seeking answers:
Evidence n context:
-what is it? Why is it there?
EVIDENCE
Examples of evidence – physical items, blood spatter, (blood impressions/transfer) trace, hair, fiber, DNA, shoe/tire impression, fingerprint, ballistics, GSR (stippling, electronic- cellphones, alternate light sources/luminol, etc.
Wound dynamics (i.e. gun, cut, blunt force, asphyxia
Manner of death (autopsy)
Anything at the scene
WHERE WE STARTS
In most instances the actor is gone
What do we know! – Evidence at the scene, statements gathered
Victomology! (Who did that person interact with? why did they interact? Where did they go? Etc. )
Develop a timeline
VICTOMOLOGY
Who is he?
What are there past 24-48 activities?
Where/What are they (home/stranger)
Habits/normal activity
Who they may have