the crime scene
DESCRIPTION
THE CRIME SCENE. PROCESSING THE CRIME SCENE. DEFINING A CRIME SCENE. Primary Crime Scene Secondary Crime Scene Macroscopic Microscopic. PHYSICAL EVIDENCE. Relation between VICTIM SUSPECT SCENE OBJECTS PHYSICAL EVIDENCE. INFORMATION FROM EVIDENCE. VERIFY STATEMENTS - PowerPoint PPT PresentationTRANSCRIPT
THE CRIME SCENETHE CRIME SCENE
PROCESSING THE PROCESSING THE CRIME SCENECRIME SCENE
DEFINING A CRIME SCENEDEFINING A CRIME SCENE
Primary Crime ScenePrimary Crime Scene
Secondary Crime SceneSecondary Crime Scene
MacroscopicMacroscopic
MicroscopicMicroscopic
PHYSICAL EVIDENCEPHYSICAL EVIDENCE
Relation betweenRelation between
VICTIMVICTIM
SUSPECTSUSPECT
SCENESCENE
OBJECTSOBJECTS
PHYSICAL EVIDENCEPHYSICAL EVIDENCE
INFORMATION FROM EVIDENCEINFORMATION FROM EVIDENCE
VERIFY STATEMENTSVERIFY STATEMENTS IDENTIFICATION OF SUSPECTSIDENTIFICATION OF SUSPECTS
AFIS, CODISAFIS, CODIS SUBSTANCE IDENTIFICATIONSUBSTANCE IDENTIFICATION
DRUGS, ACCELERANTS, DRUGS, ACCELERANTS, SCENE RECONSTRUCTIONSCENE RECONSTRUCTION INVESTIGATIVE LEADSINVESTIGATIVE LEADS
LOCARD’S EXCHANGE LOCARD’S EXCHANGE PRINCIPLEPRINCIPLE
Whenever two objects Whenever two objects come into contact, a come into contact, a mutualmutual exchange of exchange of matter matter willwill take place take place between them.between them.
SCIENTIFIC METHODSCIENTIFIC METHOD
METHODOLOGICALMETHODOLOGICAL SYSTEMATICSYSTEMATIC LOGICALLOGICAL APPLICATION OF KNOWLEDGEAPPLICATION OF KNOWLEDGE
CRIME SCENE CRIME SCENE MANAGEMENTMANAGEMENT
ABILITY TO SOLVE CRIME A ABILITY TO SOLVE CRIME A TEAM TEAM EFFORTEFFORT
INFORMATION MANAGEMENTINFORMATION MANAGEMENT MANPOWER MANAGEMENTMANPOWER MANAGEMENT TECHNOLOGY MANAGEMENTTECHNOLOGY MANAGEMENT LOGISTICS MANAGEMENTLOGISTICS MANAGEMENT
FIRST RESPONDERSFIRST RESPONDERS
Assist the victimAssist the victim Search for / arrest suspectSearch for / arrest suspect Detain witnesses / keep separateDetain witnesses / keep separate PROTECT CRIME SCENE / LOGPROTECT CRIME SCENE / LOG
DO NOT SMOKE, DRINK OR EAT DO NOT SMOKE, DRINK OR EAT Infect selfInfect self Contaminate sceneContaminate scene
Communicate all information to detectivesCommunicate all information to detectives
CRIME SCENE PROCEDURESCRIME SCENE PROCEDURES
SECURE SCENESECURE SCENE SURVEY SCENESURVEY SCENE
Minimize contact by ALL personnelMinimize contact by ALL personnel Use Personal Protective EquipmentUse Personal Protective Equipment Note evidenceNote evidence Protect evidence that may be lostProtect evidence that may be lost Note weather conditionsNote weather conditions Use alternate entryUse alternate entry Record EVERYTHINGRecord EVERYTHING
APPROACH THE APPROACH THE SCENESCENE
SECURE AND SECURE AND PROTECT THE SCENEPROTECT THE SCENE
PRELIMINARY SURVEYPRELIMINARY SURVEYOF THE SCENEOF THE SCENE
NARRATIVE: NARRATIVE: DESCRIPTION DESCRIPTION
OF THE SCENEOF THE SCENE
CRIME SCENE CRIME SCENE DOCUMENTATIONDOCUMENTATION
NOTESNOTES
VIDEOVIDEO
PHOTOGRAPHYPHOTOGRAPHY
SKETCHESSKETCHES
CRIME SCENE CRIME SCENE DOCUMENTATIONDOCUMENTATION
NOTESNOTES ImmediateImmediate AccurateAccurate ContinuingContinuing
VIDEOVIDEO 3D Documentation of scene3D Documentation of scene Orientation of scene but no narrativeOrientation of scene but no narrative DO NOT EDITDO NOT EDIT
PHOTOGRAPH PHOTOGRAPH THE SCENETHE SCENE
CRIME SCENE CRIME SCENE DOCUMENTATIONDOCUMENTATION
PHOTOGRAPHYPHOTOGRAPHY BEFORE MOVING EVIDENCEBEFORE MOVING EVIDENCE SYSTEMATICSYSTEMATIC OVERVIEWOVERVIEW MIDRANGEMIDRANGE CLOSE-UPCLOSE-UP LOG / CAMERA SETTINGSLOG / CAMERA SETTINGS SCALESCALE
Three Types of Three Types of PhotographsPhotographs
1. Overall1. Overall2. Midrange2. Midrange3. Closeup3. Closeup
CRIME SCENE CRIME SCENE DOCUMENTATIONDOCUMENTATION
SKETCHESSKETCHES Assign measurements to objectsAssign measurements to objects TriangulationTriangulation BaselineBaseline Polar CoordinatesPolar Coordinates Rough / finishedRough / finished LegendLegend
SKETCH THE SKETCH THE SCENESCENE
Rough SketchRough Sketch
Finished SketchFinished Sketch
CRIME SCENE SEARCHCRIME SCENE SEARCH
SYSTEMATIC / METHODICALSYSTEMATIC / METHODICAL
LINELINE GRIDGRID ZONEZONE WHEELWHEEL SPIRALSPIRAL
Search PatternsSearch Patterns
EVALUATION OF THE EVALUATION OF THE PHYSICAL EVIDENCE AT PHYSICAL EVIDENCE AT
THE SCENETHE SCENE
COLLECTION & PRESERVATION COLLECTION & PRESERVATION OF PHYSICAL EVIDENCEOF PHYSICAL EVIDENCE
One CSI in chargeOne CSI in charge Priority to easily destroyed evidencePriority to easily destroyed evidence Primary packagingPrimary packaging
Contain and protectContain and protect
Secondary packagingSecondary packaging Seal and tamper resistantSeal and tamper resistant INITIAL / DATE / TIMEINITIAL / DATE / TIME Identity of item enclosedIdentity of item enclosed
Evidence BindlesEvidence Bindles
DETAILED SEARCH OF DETAILED SEARCH OF THE SCENETHE SCENE
COLLECTION & PRESERVATION COLLECTION & PRESERVATION OF PHYSICAL EVIDENCEOF PHYSICAL EVIDENCE
Each item separateEach item separate Wet itemsWet items
Temporary in plasticTemporary in plastic Air DryAir Dry Permanent in paperPermanent in paper
Arson evidence – air tight containersArson evidence – air tight containers ControlsControls
COLLECTION, RECORDING, COLLECTION, RECORDING, MARKING AND PRESERVATION MARKING AND PRESERVATION
OF EVIDENCEOF EVIDENCE
What constitutes a seal?What constitutes a seal? Initials on article or containerInitials on article or container Description of contentsDescription of contents Paper is our friend!Paper is our friend! Evidence BindleEvidence Bindle
PROCESS THE SCENE FOR PROCESS THE SCENE FOR LATENT PRINTS LATENT PRINTS
AND AND COLLECT ANYCOLLECT ANY
PRINTS DEVELOPEDPRINTS DEVELOPED
CRIME SCENE CRIME SCENE RECONSTRUCTIONRECONSTRUCTION
Data CollectionData Collection
ConjectureConjecture
Hypothesis FormulationHypothesis Formulation
TestingTesting
TheoryTheory
FINAL FINAL SURVEY!!!SURVEY!!!
STOP AND THINK OF STOP AND THINK OF ANYTHING FURTHER THAT ANYTHING FURTHER THAT
MIGHT BE COLLECTED.MIGHT BE COLLECTED.
RELEASE OF THE RELEASE OF THE CRIME SCENECRIME SCENE