Physical E vidence. Review Units 2 and 3. Physical Evidence Review. What does the 1 st officer at the scene need to do after obtaining medical assistance?. Secure the Scene. Physical Evidence Review. What is the definition of a crime scene?.
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Review Units 2 and 3
Secure the Scene
The location where a crime has / might have occurred
Photographs / Video
Date, location, and time of incident
Location of all recovered evidence
Location of walls, doors, and windows
Indication of compass direction
Producing a finished sketch
The individual who packaged and marked items of evidence
Location of physical evidence recovered
Disposition of items after collection
Date of the investigation
Grid, Line, Spiral, Zone
The list of every person who has processed evidence
Crime scene processor
All forensic technicians
Evidence will be inadmissible in court
To identify and compare evidence
Evidence that can be collected
Evidence that can establish a crime has been committed
Evidence that links a crime to a victim and perpetrator
Air tight containers
Swab of the inside of a cheek to sample DNA
To compare with evidence at the crime scene
The uncontaminated surface material close to where physical evidence is deposited
It allows comparison with the evidence
Piece together stories by witnesses and suspects
Includes input from the medical examiner and the results from the laboratory
The name, location, and things to be seized and probable cause
Evidence may be lost
Mincey v Arizona – homicide
Michigan v Tyler - arson
The evidence has been unaltered.
What is individual evidence?
List TWO examples
Evidence that can be pinpointed to a specific source
Ex: Fingerprints, DNA, bullet markings
This type of physical evidence can be either natural or synthetic
These are prints that are accidental or chance prints that are NOT visible to the eye
Gas, grease, and oil are often used in _____________ cases.
What is class evidence?
List TWO examples.
Evidence that can only be associated with a group and not a single
Ex: Fibers, Hairs, Blood Type
What can be found embedded in shoes, as well as prove whether a body has been moved, and link a person to a certain location?
Soil and Minerals
Indentations left behind by a particular object such as tool marks, bite marks, and shoe prints is called…
Powder from a firearm that can be found on the shooter’s hand.
A shoe print made by a brand new pair of sneakers is an example of …
Crime scene reconstruction requires the efforts of these THREE people
Street drugs are the only illegal drugs that a person can have
Prescription Drugs that don’t have your name on them are illegal