Criminal Investigation Flashcards
Preliminary Investigative Procedures include:
Document initial observations, record the time that the call was dispatched, record time of arrival on scene, and determine your legal status on scene.
Initial Observations include:
Lighting conditions, traffic flow, pedestrian traffic, weather, and temperature.
The 4 legal status to be at a crime scene:
(1) Consent
(2) Search Warrant
(3) Exigent circumstances
(4) Search incident to arrest
What is a protective search (sweep)?
A search for victims and suspects.
Protective searches are usually based on what legal status?
Either consent or exigent circumstances.
Responding officers should enter the crime scene for ONLY these limited reasons:
(1) Determining that a crime has been committed
(2) Aiding victims.
(3) Apprehending perpetrators
(4) Securing the area
The buffer zone is approximately __ ft.
15
Basic principles of questioning:
Who, What, Where, When, How, and Why?
Biographical data in initial interview:
Full name, address(s), telephone number(s), DOB, Race, and Sex.
Neighborhood Canvass:
Walking around the surrounding area looking for witnesses.
What are the 2 types of surveillance video:
Residential and commercial
What are the 7 parts of the crime scene?
(1) Place of arrival
(2) Point of entry
(3) Path through scene
(4) Contact with the scene
(5) Contact with the victim
(6) Place of exit
(7) Place of arrest (can be geographical different)
Evidence:
Anything that the suspect brought and/or left
Search methods:
(1) Straight line/strip search
(2) Grid method
(3) Zone method
(4) Spiral method
Evidence should be unmoved until:
Photographed and rough sketch with measurements
Trace evidence:
Evidence so small that it can be transferred to another location and not be noticed.
Tapings should be performed with _____________ ____.
Fingerprint tape.
Package tapings should be place in which type of bag?
Ziploc or cellophane.
Biological fluids should be place in which type of bag?
Paper.
Wet stains are collected by:
Absorbing fluids onto 2 sterile cotton swabs.
Dry stains are collect by:
Distilled water
