L4: Investing the crime scene Flashcards
what was the Australia 1960 case?
Graeme Thorne was kidnapped
5 weeks later found in rug
suffocated and clubbed to death
what physical evidence was found for the Australia 1960 case?
Pink granular mineral material, animal hairs and
human hairs on his clothing
• Mould on his shoes and socks
• Plant material including seeds on the rug and body
what was the pink and plant material?
pink material was an unusual building mortar while the plant material included the seeds of a rare variety of cypress tree.
how long after being kidnapped was he killed?
shortly after
what did police do with the pink and plant material?
identify houses built with these materials/ around these materials.
what happened with the empty premises they found?
photograph of picnic with blanket
perkiness dog
blue ford car sam seen near kidnapping
Stephen Bradley life imprisoment
what should the FAO do?
Initial assessment
• Preserve the scene
• Call for assistance
• Record keeping and communication
what should the Crime Scene Coordinator do and what should happen at a crime scene?
Allocation of teams to scenes
• All duties to be documented
• Investigation should not disturb the integrity of the scenes
• Avoid contamination and secondary transfer of evidence by proper management of evidence retrieval
• Protective clothing
who is responsible for recovering evidence?
CSE and others
how to recover evidence?
Use special lighting to reveal evidence Enhancement of marks and appropriate packaging labelling and signing packed evidence
How do you record evidence?
photography video sketches written notes audio recording
what does contamination do ?
Evidence loses its integrity through contamination with other material
when can contamination take place?
- with things bought by police officers
- errors in handling in transit
- within the lab itself
what is secondary transfer?
Evidence moving inadvertently within a scene or from one scene to another after the crime.
how can transfer take place?
contact between suspect and witness
transfer during transport
transfer in the lab
in court what has to be ensured
continuity of evidence
control of all scenes and all activities documented
who carries out prosecutions England and Wales?
CPS
what type of reports are required?
- CSI reprot form
- forensic evidence labels
- CSI’s statement on activity
- executive summary - SIO
- forensic case for scientific examination of evidence
- streamlined forensic reporting
what does SF reporting do?
manages cases
save costs
avoid delays
strengthens report
breakdown SFR report
SFR Initial Forensic Investigation Report, used for an initial forensic strategy
• SFR Stage 1 Forensic Results report, with key forensic findings
• SFR Stage 2 Forensic Issues report with full findings, addresses case issues and disputed matters
• SFR Crime Scene Investigation statement, relating to SRF 1
what happened in the Sarah Payne case?
July 2001, wondered off playing with siblings
bro saw white van
2 weeks later body found in a field
child sex offender list, Roy Whiting suspect- had white van
what is a crime scene ?
place, person or sometimes an object where evidence may be recovered, held or processed
what where the main crime scenes in the Sarah Payne case?
- The body and its immediate environment
- The surrounding environment of the body (may need to be sub-divided depending on geography)
- The suspect (including his house if necessary)
- The suspect’s van
- The victim’s house
- The mortuary (note that the body is in two scenes)
- The person who found the body (and his/her house if necessary)
- CSEs and their vehicles
- Forensic laboratories
what evidence was found in the Sarah Payne case?
- body remains
- balls of hair with trace fibres
- shoe velcro fibre
- van had red sweatshirt, clown pattern curtain, socks, shirt and fuel reciept
- home - tooth, hair brush, sweater
- van: fibres on seat
what DNA evidence was there?
- body identified using milk tooth
- her hair follicle found in van
- red sweater was Roys
what fibre evidence was there?
- sock fibre on body linked them
- shoe Sarahs as blue fibre
- shoe had red sweater and curtain fibres
- body and van linked seat fabric
- hair in van match hairbrush
what makes fibre evidence strong?
Combination of physical and chemical measurements makes the fibre analyses very strongly classifiable
