Title Introduction Friendship Body and mind Studying abroad Review science and technology at home Back to nature Communication Review Business management Young people's rights Community matters Review British culture Crime detection Travel Review 4 Practice test Answer



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Preserving the scene
When the SOCO arrives at the crime scene, they put on a full protective body suit, gloves, a 
mask, and plastic overshoes. Without this, the SOCO's skin cells, hair, fibres, fingerprints or 
shoeprints could be added to the crime scene.
7 8
Get Ready for IELTS: Reading


Unit 11
Recording the scene
The SOCO must produce a permanent record of the crime scene, using detailed written notes
sketches, photographs and videos. It is essential that the original position of items at the scene is 
recorded. Some biological and chemical evidence may quickly deteriorate. Other evidence may be 
very fragile, and might be destroyed as the SOCO tries to recover it. Other evidence from the scene 
of crime will be sent to the forensic lab for analysis.
Photographing the scene
When photographing a crime scene, the SOCO follows four rules:
1
Photograph the whole crime scene.
2
Photograph each item at the scene before doing anything to it.
3
Add a scale and photograph the item again.
4
After collecting trace evidence from the item, or removing it for analysis, photograph the same 
part of the crime scene again.
The search for evidence
Any evidence at the crime scene may turn out to be important at some stage in the investigation, so 
it's important that the team's search is thorough and systematic.
• 
Some of the evidence, such as a cigarette butt, may be immediately obvious to the SOCO.
• 
Some of the evidence, such as fibres, may be present in very small amounts. This is called trace 
evidence.
• 
Other evidence, such as fingerprints, may be invisible to the naked eye, and special techniques 
are needed to reveal it.
• 
Some evidence may have been damaged, for example burnt. Special procedures are then needed. 

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