They take photographs and physical measurements of the scene, identify and collect forensic evidence, and maintain the proper chain of custody of that evidence. Crime scene investigators collect evidence
such as fingerprints, footprints, tire tracks, blood and other body fluids, hairs, fibers and fire debris
.
What are the 4 types of evidence in forensics?
There are four types of evidence recognized by the courts and we will take a look at them today. The four types of evidence recognized by the courts include
demonstrative, real, testimonial and documentary
.
What are the 4 steps of crime scene processing?
- 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 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 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 7 S’s of a crime scene?
- Securing The Scene.
- Securing And Collecting Evidence.
- Separating The Witnesses.
- Sketching The Scene.
- Seeing The Scene.
- Scanning The Scene.
- Searching For Evidence.
What are the 5 steps to crime scene processing?
INTERVIEW, EXAMINE, PHOTOGRAPH, SKETCH and PROCESS
.
What is the strongest type of evidence?
Direct Evidence
The most powerful type of evidence, direct evidence requires no inference. The evidence alone is the proof.
What are the 7 types of evidence?
- Personal Experience. To use an event that happened in your life to explain or support a claim.
- Statistics/Research/Known Facts. To use accurate data to support your claim.
- Allusions. …
- Examples. …
- Authority. …
- Analogy. …
- Hypothetical Situations.
What are the 2 main types of evidence?
There are two types of evidence; namely,
direct evidence and circumstantial evidence
.
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.
Which crime scene search method is best?
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 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.
