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ANT205H5 Lecture Notes - Forensic Anthropology, Homicide, Flashlight

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Carolan Wood

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ANT 205 lecture 3 24Sept2012
In an analysis, nothing is too trivial to be overlooked - Ellery Queen, The French Power
CSI in Canada:
-police officers:
-response to scene
-scene security
-crime scene survey
-recognition of physical evidence
-collection of physical evidence
-packaging and preservation
-examination of physical evidence
-crime scene analysis
-crime scene reconstruction
Classification of crime scene:
-nature of crime: homicide, robbery
-location: indoor or outdoor
Primary = 1st crime act
Secondary = all the others
Knowing type of scene:
-predict involvement of other scenes
-nature of other scenes
-location of other scenes
First responder:
- police, emergency medical and firefighters
- observe crime scene in the original position
- do not destroy evidence if possible
-but have higher priority to rescue victim
1st priority: assist victim
2nd priority: search, apprehend suspect

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-secure and protect crime scene
Secure the scene
- outside perimeter
- keep out onlookers
- caution tape
- security officers
-no nonessential person
- sign in and out
- time and purpose
- inner perimeter
- borders of crime scene
- scene investigation
- personnel/support
-between inner and outer perimeter
- command post
Physical evidence
= useful info
-crime taken place
- info about the method of operation (MO)
- links ppl, place, things
- witness statement
-ID suspect
- provide lead
- patterns and positions
Condition/transitory evidence
- condition = produced by event or act
- transitory = not permanently/ temporary/ easily lost or changed
- document first!
-not observed and documented immediately will be lost forever
-position of doors, windows, furniture
-lights on of off?
-colour of flame

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-presence of odours (gas, perfume, smoke)
-position of folds of clothings
-placement of bed sheets
-towels, clothes, etc. dry or wet?
-blood wet, coagulating or dry?
-temperature: determine time of death
Transfer/trace evidence:
-physical contact between ppl/ things
- Locards theory of exchange
- mutual exchange of matters between any two surfaces that come into contact with one another
Ie. Fibres, hair, etc.
Scene survey and documentation
-examine scene (not touching or moving)
- document position of everything
-photos (digital), video, sketch maps, notes
- no sounds or talking
- move slowly
- all perspectives
- show processes
-date and time
- entire scene to close-up
Scene survey and plan for evidence recovery
-devise plan for evidence recovery
-Canada: ident officer only to process scene
-masks, bunny suits (Tyvek), gloves and booties
-prevent contamination officer and scene
Evidence collection
-recognition: different if indoor vs. outdoor
-marks of forced entry?
-scratches at keyholes
-lights working? Bulbs unscrewed?
- contents of ashtray, butts = good DNA
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