Personnel at a Crime Scene PDF

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Summary

Roles of personnel
Responders
Lee, Palmbach, Miller: Model
CSI role...

Description

Roles of Personnel – Initial responders –       

Informant FAO – first attending officer Extra patrols Supervisor (sergeant) Ambulance Fire and rescue EOD

Secondary responders –    

Crime scene investigator CSI Crime scene manager CSM Crime scene coordinator CSC More detectives and SIO

Tertiary responders –           

FME Pathologist Surveryor Scientists Fire investigator Blood spatter/BPA expert Drugs expert Drugs expert Archaeologists Botanists SA Lee, Palmbach, Miller: Model –

Recognition  Documentation  Collection and Preservation  Reconstruction  Evaluation  Individualisation  Comparison  Reporting and Presentation. (Search and) Recognition –        

What is evidence Information from witnesses Predictions Use the ABC rule! The FAO views the scene and considers what is useful and then preserves it The CSA will establish what is useful and preserve it for the CSI The CSI gathers facts and use their experience The CFI will do the same but for digital evidence.

Documentation –   

The scene needs to be properly documented with a permanent record of photos, videos and handwritten or digital notes The CSI normally carries out the photography Everybody who attends the scene needs to take notes

Collection and preservation –     

Relevant material is collected Quality standards! ISO 17025 PPE must be worn New and unused packaging must be used Recordings of batch bar codes must be done

Identification –  

A comparison process between the evidence and known evidence: dimensions, the shape, state, properties etc The description puts them into a class & subclass. The unique features identify then. The features can be individualised

Comparison – 

The comparison between the questioned object and an exemplar or control

Individualisation –     

Demonstrating that the questioned object created the ‘mark’ Demonstrating sufficiently unusual or unique features on one things matches Relationship between two devices Dna sample A fingerprint

Evaluation –  

Evaluate the usefulness of the evidence Interpretation is all about giving a meaning to analytical results

Reconstruction –    

Requires deep thinking Mentally or physically Establish what happened using pattern evidence, lab analysis in the context of crime A digital model could be used

Reporting and Presentation –   

All the scene personnel and experts must report their findings – fact and opinions They must write a statement Sometimes they must give evidence in court

Types of personnel at a scene –                    

FAO CSI CSM CSC Dogs Ambulance SIO Pathologist Fire officer polSA Botanist Helicopter pilot Scientist Exhibit officer EOD officer Engineer Surveyor Anthropologist Fingerprint officer And many more

Role of CSI –         

Confirm that a crime was committed Preserve scene Recognise what is evidence Record Recover evidence Package and store evidence Brief the investigating officer Prepare statements Give evidence within the courts...