Steps of CS Processing
What is the first step of processing a crime scene?
Securing the Scene
What is the fifth step of processing a crime scene?
Sketching the scene
What is Physical evidence?
Any and all objects that can establish that a crime has been committed or can link a crime and it's victim or it's perpetrator. Examples include hair, skin, fibers, fingerprints, blood, DNA, weapons, soil, glass, and documents.
Why should all items of evidence be placed in separate containers?
To prevent damage through contact and cross-contamination
What can a crime scene sketch show you?
it shows the dimensions of the crime scene and the distance between objects
What is the second step of processing a crime scene?
Separating the witnesses
What is the sixth step of processing a crime scene?
Searching the evidence
What is chain of custody and why is it important to maintain chain of custody?
What is Chain of Custody is a list of all people who came into possession of an item of evidence. Failure to substantiate the chain of custody may lead to serious questions regarding the authenticity and integrity of the evidence and the examinations of it.
What is the most important prerequisite for photographing a crime scene?
For it not to be altered
What is the third step of processing a crime scene
Scanning the scene
What is the seventh step of processing a crime scene?
Name and describe the two kinds of sketches prepared for a crime-scene.
A rough sketch is a draft representation of all essential information and measurements, and is drawn at the crime scene. A finished sketch is a precise rendering of the crime scene, usually drawn to scale.
What objects and areas should be sketched?
Any relevant objects or dimensions in the crime scene.
What areas should be photographed during a crime-scene investigation?
What are The areas photographed should include the location in which the crime actually took place and all adjacent areas where important acts occurred immediately before or after the commission of the crime.
What is the fourth step of processing a crime scene?
Seeing the Scene
What is the best way to maintain the integrity of physical evidence?
The integrity of evidence is best maintained when the item is kept in its original condition as found at the crime site.
What information must be included in written notes made at the crime scene?
What is Notes taken at the crime scene must include a detailed written description of the scene with the location of items of physical evidence recovered; the time an item of physical evidence was discovered; by whom, how, and by whom it was packaged and marked; and the disposition of the item after it was collected
Why is it important to exclude onlookers from a crime scene?
To protect the integrity of the evidence and prevent destruction of evidence.
What is an exception that allows a officer to alter a crime scene before evidence is collected?
What is If the victim is still alive on the scene or the suspect is still there
What jobs are there on the crime scene?
First Officer, Crime Scene Investigator, Medical examiner or coroner, District attorney, Detectives, Specialists
What are different ways to collect the evidence?
What is Photographing and documenting the scene Collect trace materials (especially from probable points of entry) Collect low-level DNA evidence by swabbing areas of likely contact Collect other items that may contain biological evidence Locate and collect latent fingerprints
Name one type of evidence that should be stored in an airtight container
Charred debris from the scene of a suspicious fire must be sealed in an airtight container
If objects have been moved or removed from a crime scene, the investigator should do what?
What is Note that the objects were moved, but do not reintroduce them to the crime scene.
Why does sketching the crime scene matter?
What is It accurately portrays the physical facts. It relates to the sequence of events at the scene. It establishes the precise location and relationship of objects and evidence at the scene. It helps to create a mental picture of the scene for those not present. It is a permanent record of the scene. It usually is admissible in court.