What are the 8 roles and responsibilities of a CSI
Confirm that a crime has been committed Preservation of the scene Identify key evidence areas Identify key evidence types Record all evidence Recovery of all evidence Packaging and storing evidence Briefing the SIO
What are the 6 considerations when attending the crime scene?
- Initial assessment
- Identification of key evidence areas
- Preservation of the scene
- Planning the recovery of evidence
- Recording the evidence
- Recovering the evidence
What are the 5 considerations before entering the crime scene?
Health & Safety -Physical environment -Chemical hazards -Biological hazards Risk Assessment
What are the 6 features of planning evidence recovery
- Failing to plan is planning to fail
- Scientific samples
- Footwear
- DNA
- Forensic Scientist
- Specialists
What are the 5 ways contamination can occur during an investigation
- Personnel to DNA exhibit
- Contaminated consumables
- Swabs, Tubes, Containers
- DNA sample to DNA exhibit
- Contaminated equipment not properly cleaned from previous scenes
What are the two types of contamination that can occur into a DNA exhibit?
Direct, (Saliva,Dandruff)
Indirect
What are the 4 non disposable equipment available to csi’s
- Fingerprint powders & brushes
- Imaging equipment
- Lighting equipment
- Stepping plates
Cognitive Bias is where…
Individuals create their own subjective social reality from their perception of the input
What are the 3 DONTS of hypotheses
- Don’t base hypothesis on ‘flights of fancy’
- Don’t make assumptions
- Don’t believe assumptions made by others are fact
What does HOLMES stand for
Home Office Large Major Enquiry System
What are the 5 police objectives in a crime scene
- Preservation of life
- Safety
- Preservation & recovery of evidence & intelligence
- Minimise contamination
- Maximise potential to detect crime
What are the 6 main considerations in regard to a good Cordon
- Vehicles parked inside outer cordon, outside the inner cordon
- Common approach path to victim
- Think about where to place outer cordon
- THINK! about the areas you are in
- First officer attending = cordon officer
- Body in scene = Ask cordon officer if life is extinct & call pathologist
What does FOA stand for
First officer attending
The FOA is usually what role?
Police constable OR pcso
What are the 4 things that the Initial considerations of the FOA will depend on
- Category or serious nature of the offence
- Their own observations
- The info provided by the injured party
- The info provided by witnesses
What are the 3 types of criminal offences
Serious
Major (Manslaughter, Murder, Rape)
Volume( Theft, crim damage, burglary, common assault)
What are the two types of samples that can be taken from a victim?
Intimate
Non-Intimate
What are the 8 types of intimate samples
Dental impressions Semen sample Blood sample Urine sample Pubic hair sample Genital swab Swab taken from any body orifice other than the mouth
What are the 5 types of Non-intimate sample?
Sample of hair other than pubic Sample taken from/under nail Sample of saliva Skin impression other than fingerprint Swab from any part of body that isn't intimate
6 Considerations for the FOA when dealing with witnesses
- Could be friend/fam of victim
- Could be drunk/on drugs/ in shock
- Locate independent witnesses! impartiality = greater validity
- Must get as much info as possible from witnesses
- Minimum info = Name, address, phone number
5 Considerations when dealing with suspects (FOA or otherwise)
- Possible both V & S still at scene
- Contain is POSSIBLE & LIKELY when this happens ^
- Officers actions must be carefully REPORTED & SCRUTINISED
- Consider contam by SECONDARY TRANSFER. Officer -> victim -> officer -> suspect
- MUST explain full circumstances to forensic scientist
Dealing with the crime scene (Cordon)
- )Major scenes need an INNER & OUTER cordon
- )Larger the outer cordon the better
- )Adequate outer cordon is of utmost importance
- )Make common approach path
- ) Must record all entries of authorised personnel
- ) When possible the CAP should follow diff route than the offender
6 Considerations when attending the crime scene
Initial assessment Identification of key evidence areas Preservation of the scene Planning the recovery of evidence Recording the evidence Recovering the evidence
5 Considerations before entering the crime scene
Health and safety Physical environment Chemical hazards Biological hazards Risk assessment
