Whether the crime scene is a recovered stolen vehicle or a multiple homicide where several crime scenes are involved the basic protocol is the same:
INTERVIEW, EXAMINE, PHOTOGRAPH, SKETCH and PROCESS
.
What are the four basic investigative stages?
- Preserve and Document the Incident Scene. An incident investigator’s first priority should be to ensure that the incident site is safe and secure. …
- Collecting Information. a Interviewing witnesses. …
- Determine Root Causes. …
- Implement Corrective Actions.
What are the 4 types of crime scene patterns?
- Lane or Line.
- Spiral or Circle.
- Pie or Wheel/ Radial or Rose Azimuth.
- Grid.
- Zone or Quadrant.
What are the 5 steps for crime protocol?
The basic crime scene procedures are
physical evidence recognition, documentation, proper collection, packaging, preser- vation, and, finally, scene reconstruction
.
What are the steps for the crime scene protocol in order?
- Approach the Scene. …
- Secure and Protect the Scene. …
- Initiate Preliminary Survey. …
- Evaluate Physical Evidence Possibilities. …
- Prepare a Narrative of the Scene. …
- Capture the Scene Photographically. …
- Prepare the Crime Scene Sketch. …
- Conduct a Detailed Search.
What are the 7 basic steps in crime scene investigation?
- Secure the Scene.
- Separate the Witnesses.
- Scan the Scene.
- Photograph the Evidence.
- Sketch the Scene.
- Search the Scene.
- Secure and Collect Evidence.
What is the first thing to do at a crime scene?
A crime scene investigator’s first step is
to talk to the initial officers on scene
. Their observations can affect how the walk-through of the scene is conducted by CSI, what is included in a search warrant application, and even what equipment (like OSCR360) and/or additional personnel are needed.
What are 3 methods of investigation?
There are three types of scientific investigations:
descriptive, comparative and experimental
.
What are the six methods of investigation?
They are: methods of
contrastive analysis, operational analysis, distributional analysis, immediate constituents analysis, componential analysis, transformational analysis, method of semantic differentiation
.
What are the 3 tools of investigation?
Tools To establish facts and develop evidence, a criminal investigator must use these tools-
information, interview, interrogation, and instrumentation
. 3.
What is the most important part of the crime scene?
The Body
.
The body
is the most important piece of evidence of any death scene. Without a body, you have do not a death scene, (even if the body is presumed dead and ordered so by the courts) . Information from the body is what directs the investigation.
What is the best method of crime scene search?
The grid method
is best used in large crime scenes such as fields or woods. Several searchers, or a line of them, move alongside each other from one end of the area to be searched to the other.
What type of evidence should be collected first?
In order of collection,
the most fragile evidence must be collected first
. A crime scene investigator may start with hairs and fibers and fingerprints and then work his or her way through the evidence, peeling back one layer at a time.
What should be photographed first?
The object should first be photographed as is, then photographed with the ruler
. It is important that when doing one-to-one photography that the ruler is on the same plane as the object being photographed and the film plane is parallel to the ruler. This is why a level and a tripod are necessary.
What is the golden rule in criminal investigation?
The Golden Rule in Criminal Investigation. “
Do not touch, alter, move, or transfer any object at the crime scene unless it is properly marked, measured, sketched and/or photographed
.”
What are the investigation techniques?
For countless years, criminal investigators have relied on six basic investigative techniques to solve crimes; i.e., (1)
the development of informants
, (2) use of undercover agents, (3) laboratory analysis of physical evidence, (4) physical and electronic surveillance, (5) interroga- tion, and (6) where permitted by …
