FRSC 1011H Chapter Notes - Chapter 4: Synthetic Fiber, Petroleum Product, Eye Protection
2 May 2018
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Collection of Crime-Scene Evidence
Common Types of Evidence
● Every crime scene has to be treated on an individual basis, having its own
peculiar history, crimunstances, and problems.
● Blood, Semen, and Saliva
○ Present in a form that suggests a relationship to the offense or people
involved in a crime. These substances are subjected to serological and
biochemical analysis to determine identity and possible origin.
● Documents
○ Any handwriting and typewriting submitted so that authenticity or source
can be determined.
● Drugs
○ Any substance in violation of laws regulating the sale, manufacture,
distribution, and use of drugs.
● Explosives
○ Any device containing an explosive charge.
● Fibers
○ Any natural or synthetic fiber whose transfer may be useful in establishing
a relationship between objects and/ or people
● Fingerprints
○ All prints of this nature, hidden (latent) and visible
● Firearms and Ammunition
○ Any that is suspected of being involved in a criminal offence
● Glass
○ Any glass that may have been transferred to a person or object involved in
a crime.
● Hair
○ Any that could link a person with a crime
● Impressions
● Organs and Physiological Fluid
○ Body organs and fluid submitted for analysis to detect the possible
existence of drugs and poisons.
● Paint
○ Any paint that may have been transferred from the surface of one object t
another during the commission of a crime.
● Petroleum Products
○ Any petroleum product removed from a suspect to recovered from the
crime scene. Example gasoline
● Plastic Bags
● Plastic, Rubber, and other Polymers
● Powder Residues
● Serial Numbers
● Soil and Minerals
● Tool Marks
● Vehicle Lights
● Wood and other vegetative matter
Evidence- Collection Tools
● Notebook
● Pen (blue or black)
● Ruler
● Chalk or crayons
● Magnifying glass
● Flashlight
● Disposable forceps and similar tools that may be needed to pick up small items
● Scalpels or razor blades
● Swans and medicine droppers for presumptive testing
● Gauze or sterile cloth
● Unbreakable plastic pill bottles with pressure lids
● Evidence sealing tape
● Evidence tage (indoor) or flags (outdoor)
● Various sizes of paper bags, boxes, and manila envelopes
● Red “biohazard” labels
● Paper for wrapping or for creating “druggist folds”
● Alternate light source
● Lifting tape for gathering hair or trace evidence
● Vacuum collector with filters
● Fingerprint powder, brushes, and lifters
● Disposable gloves, face masks, and shoe covers
PPE
● Eye protection
● Chemical protective clothing
● Respiratory protection
Document Summary
Every crime scene has to be treated on an individual basis, having its own peculiar history, crimunstances, and problems. Present in a form that suggests a relationship to the offense or people involved in a crime. These substances are subjected to serological and biochemical analysis to determine identity and possible origin. Any handwriting and typewriting submitted so that authenticity or source can be determined. Any substance in violation of laws regulating the sale, manufacture, distribution, and use of drugs. Any natural or synthetic fiber whose transfer may be useful in establishing a relationship between objects and/ or people. All prints of this nature, hidden (latent) and visible. Any that is suspected of being involved in a criminal offence. Any glass that may have been transferred to a person or object involved in a crime. Any that could link a person with a crime. Body organs and fluid submitted for analysis to detect the possible existence of drugs and poisons.
