Crime Scene (Power Point)

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10 feet from base point 1 to base point 2.1 10 feet21A – 5’2A – 6’1B – 7’2B – 4.5’1C – 7’2C – 8.5’1D – 8.5’2D – 7.5’1E – 9’2E – 4.5’R = 1.5’
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The student will be able to summari
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8. Do not permit personnel to begin
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Communication, between the search p
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Determining the search method and a
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Since all crime scenes are unique i
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Strip or Line search. This method,
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Circular (spiral or concentric) sea
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Elevation Zone Search
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Some investigative tools and equipm
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Bloodstain PatternDocumentationABFO
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Trace Evidence CollectionAcetate sh
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ImpressionBowls/mixing containers.B
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Guideline for conducting a crime sc
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Methods of conducting a preliminary
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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
Page 64 and 65: Suitable scales for use in police w
Page 66 and 67: TitleThe title should contain data
Page 69 and 70: Rectangular CoordinatesObjects are
Page 71 and 72: Reasons for taking Crime Scene Phot
Page 73 and 74: Photographs should be taken prior t
Page 75 and 76: Photographic Log1. It is a complete
Page 77 and 78: Mid-range photographs.a. Usually ta
Page 79 and 80: 3. Centering on the results of the
Page 82 and 83: General standards used to review th
Page 84 and 85: The relationship between crime scen
Page 89 and 90: Fingerprints as physical evidence.R
Page 91 and 92: The fingerprint classification coul
Page 93 and 94: Despite such factors as aging and a
Page 95 and 96: • The ridge arrangement is perman
Page 97 and 98: Patterns can be further subdivided
Page 99 and 100: “Visible", “Plastic", and “La
Page 101 and 102: The process of producing latent imp
Page 103 and 104: Occasionally, wet items, such as be
Page 105 and 106: In cases involving items with mater
Page 107 and 108: Before developing the print, the fi
Page 109 and 110: Prints should be photographed befor
Page 112 and 113: Methods used to develop latent fing
Page 114 and 115: Silver Nitrate.Silver nitrate cryst
Page 116 and 117: ◦◦Immersion in silver nitrate s
Page 118 and 119: Super-glue fuming(cyanoacrylate res
Page 120 and 121: Lasers.a. Technique used to develop
Page 123 and 124: Rolling a full set of legible finge
Page 125 and 126: Fingerprint cards bearing these not
Page 127 and 128: Obtaining Clear and Distinct Finger
Page 129 and 130: dentification, Collection, and Pres
Page 132 and 133: Case number.Exhibit number (when nu
Page 135 and 136: Definition:A list of persons handli
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After you have decided what is the
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Different classes of evidence:Weapo
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Soil(dirt, mud, sand, ect..)Dry soi
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Beware of acids and caustics that a
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Firearms
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Never stick anything, such as a pen
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Weapon may now be processed for lat
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Never retain a loaded weapon, unloa
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Loaded firearms.Revolvers.(1) Mark
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Semi-automatic handguns(1) Usually
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Glass evidence1. Glass fragments ca
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e. Glass on the ground should be ca
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Paint evidencee. Smeared paint, par
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Controlled substances.1. Keep drugs
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d. Tablets or capsules - package in
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Prints and impressions.Prints and I
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Hair and FibersIt may be necessary
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A. AIDS is caused by a virus, which
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After finishing with a crimescene,
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Spills of blood or other potentiall
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When a dried bloodstain is scraped,
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When a dead body is discovered and
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Personal Protective Equipment1. Han
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Special Storage Needs for Certain T
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ToolsProtect the working surfaces f
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DNA Evidence
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Two methods of DNA evaluationDNA an
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Examinations can determine the foll
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Maintaining a “chain of custody
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Collecting BloodSamplesLiquid blood
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Blood on surfaces or in snowor wate
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Air-dry small suspected wet bloodst
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Absorb suspected dried bloodstains
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Collecting saliva and urine samples
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Saliva on chewing gum1. Pick up che
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Salivaa. Absorb suspected liquid sa
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Saliva or urine stains from immovab
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Dry semen-stained objects1. Submit
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Dried semen stains on immovable obj
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Collecting hair samplesKnown hair s
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Pubic and Head CombingsPick up hair
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Collect teeth in the following orde
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Collecting DNA evidence from hats,
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Fingernails1. Use care when scrapin
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Doors and WindowsDoors and windows
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E. When DNA evidence is transferred
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Specific Crime Scene SearchesBurgla
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Evidence.1. Collect, mark, and inve
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Investigating an alleged robbery
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Crime scene search:Physical evidenc
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Investigating an alleged theftB. De
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Crime Scene1. Do not touch anything
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Investigating an alleged sexual ass
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f. Identify, collect, and preserve
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e. Specimens:Request slides even th
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If a suspect is taken into custody:
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Crime Scene (Power Point)

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