Crime Scene (Power Point)

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Since all crime scenes are unique in circumstances andcharacteristics there can be no set procedure that will apply ineach search.Each scene must be studied and thoroughly planned toensure complete coverage of the search area.
The various types of search methods.Strip or line search.Circular (spiral or concentric) search.Quadrant, sector, or zone search.Elevation Zone Search
Page 2 and 3: The student will be able to summari
Page 4 and 5: 8. Do not permit personnel to begin
Page 8 and 9: Communication, between the search p
Page 10 and 11: Determining the search method and a
Page 14 and 15: Strip or Line search. This method,
Page 16 and 17: Circular (spiral or concentric) sea
Page 19 and 20: Elevation Zone Search
Page 21 and 22: Some investigative tools and equipm
Page 23 and 24: Bloodstain PatternDocumentationABFO
Page 25 and 26: Trace Evidence CollectionAcetate sh
Page 27 and 28: ImpressionBowls/mixing containers.B
Page 29 and 30: Guideline for conducting a crime sc
Page 31 and 32: Methods of conducting a preliminary
Page 33 and 34: Field notes
Page 35 and 36: Protection of a crime scene.Protect
Page 37 and 38: Once evidence has been located, rem
Page 39 and 40: Conducting a final survey of the cr
Page 41 and 42: After the Search is complete, but p
Page 43 and 44: The importance for maintaining a ca
Page 45 and 46: The importance for conducting a fol
Page 47 and 48: Sketching and Photographing
Page 49 and 50: The main reasons for using crime sc
Page 51 and 52: The crime scene sketch should inclu
Page 53 and 54: The finished sketch.a) A finished s
Page 55 and 56: D) If requested, dimensions and des
Page 58 and 59: The schematic sketch:Used to repres
Page 60 and 61: Prevalent sketch:Sketch of the gene
Page 62 and 63:
Compass direction.A standard arrow
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Suitable scales for use in police w
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TitleThe title should contain data
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Rectangular CoordinatesObjects are
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Reasons for taking Crime Scene Phot
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Photographs should be taken prior t
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Photographic Log1. It is a complete
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Mid-range photographs.a. Usually ta
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3. Centering on the results of the
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General standards used to review th
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The relationship between crime scen
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10 feet from base point 1 to base p
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The methods of classifying fingerpr
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The only patterns usually used to d
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Methods for identifyingFINGERPRINTS
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Types of PatternsFingerprints may b
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Identification points1. Bifurcation
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Latent Impressions (patent fingerpr
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The quality of latent impressions c
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Protect all areas, as best you can,
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Dusting for Latent ImpressionsFor h
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Powder should be used sparingly.Dis
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Use lifting tape large enough to co
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Ninhydrin.This chemical acts as a d
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This solution reacts with sodium ch
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Print development by this method de
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In order Three to speed to four up
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THE AFIS SYSTEMAFIS technology uses
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First things first, make sure the p
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Recommended equipment:Inking plateC
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In taking rolled impressions, the s
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Closely observe the crime scene. It
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Be sure that you’ll be able to an
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Marking EvidenceAnyone who handles
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Each different itemshould be packag
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An unfortunate side affect of these
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LiquidsMost often encountered in ar
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Flammable liquids and accelerants e
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The firearm should behandled carefu
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Note the following conditions:Physi
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Avoid the front of revolver cylinde
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Marking firearms.a. Don't deface a
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When cylinders must be unloaded(1)
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Projectile evidence (expended bulle
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Collection and preservation of glas
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Paint evidence.1. Collection and pr
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Suspects clothing1. A suspect’s c
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Most illicit drugs come in one of s
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Stainsa. Blood is the stain found m
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3. Prints, such as latent prints an
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Precautions that should be taken to
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There are certain precautions, whic
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In the case of an accidental wound,
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Evidence stained with blood or body
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Even after evidence has been proper
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Safety precautions, safe work pract
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Hazardous materials transportation.
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ExplosivesBlasting caps, unstableex
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Preserving evidence during foul wea
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DNA (deoxyribonucleic acid)- the mo
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Important considerations of DNA eva
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Blood examinations cannot determine
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Methods of collecting known bloodsa
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Dried blood on aperson1. Absorb sus
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BloodstainsAir-dry wet bloodstained
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When possible, cut a large sample o
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Blood examination request letterA b
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Saliva on cigarette butts1. Pick up
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Saliva on envelopes and stamps1. Pi
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Dry saliva- or urine-stained object
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Semen stainsLiquid semen1. Absorb s
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Semen stains from immovable object1
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2. Refrigerate samples and submit t
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Hairs in the hand of the victims1.
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Methods of collecting Tissue, Bone,
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Place tissue samples in a clean, ai
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Socks1. Socks worn by a homicide vi
Page 225 and 226:
WeaponsWeapons recovered at a crime
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Considerations of documenting, coll
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G. It may be necessary to use a var
Page 231 and 232:
Search the burglarized structure to
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Checklist for burglary investigatio
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A. Response to a robbery crime scen
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Checklist for robbery and aggravate
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Investigating an alleged physical a
Page 241 and 242:
Checklist for an assault, or aggrav
Page 243 and 244:
3. Note and document the victim's c
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Medical treatment (specimens)a. Adv
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(3) Hair from the victim. Request a
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Crime Scene (Power Point)

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