A Simplified Guide To Crime Scene Investigation

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A Simplified Guide To CrimeScene Investigation

egardingguiltorinnocence.Principles of Crime Scene nd

uspects.GaugingtheValueofEvidence

Itisunique- - - nstanceifthevictimwasanon- couldbeanimportantbitofevidence.

(CourtesyBeckyCarter,CEP)Itisaphysicalmatch- item.Why and when is a crime sceneinvestigation dandinvestigatedincludingthescenesof: Investigatorsmaydiscoverthatseveralcrimeshavebeen

ndarycrimescene.How It’s estigation: mprobablepointsofentry)Collectlow- enes

dentification(IAI)thatdemonstratetheirproficiency: etyandhealthhazards- t,investigatorsestablishanareathatissizeable

blishsecurity- ecessary.3.Plan,communicateandcoordinate- opanevidence- uations.4.Conductaprimarysurvey/walkthrough- idence- umentandprocessthescene- ionwithdigitalandvideocamerasor,ifavailable,a3- realsocreated.Duringtheevidence- ‐collectionprocess,itis

view- tep.7.Recordandpreserveevidence- Inadditiontohelpingprovidecluesto

lchallengesfortheinvestigator.

ry,isdesignedtoensureathorough,high- idenceshouldbetestedandanypost- rectsawalk- herearetwo

p://www.ascld- ‐lab.org/)andANSI- mationsuchas: tionthatwouldbeimportanttothenon- ll.

vestigatedarenotofahigh- onof3D- nvestigatorsandforensicscientistsinvolved.Common online(http://www.nij.gov/topics/law- ‐enforcement/investigations/crime- - ,fingerprints,clothingfibers).Associativeevidence- ofthecrime.Biologicalevidence- dfromahuman,plantoranimal.Chainofcustody- fortheevidencetobetamperedwith.

Contamination- evidencecontamination.Controlsample- inatedduringthecommissionofthecrime.Cross- ‐contamination- ‐Theunwantedtransferofmaterialb

r"multiple"scenes"that" require"investigation." xamine"the"primary .

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