What must be done with wet items in a crime scene?

What is the correct order for processing a water crime scene?

What are the correct order of the steps taken while processing a crime scene? Assess the crime scene and assist those who are hurt, Detain witness, Arrest the perp, Protect crime scene, Take notes. You just studied 10 terms!

What 3 things must be done to document a crime scene?

The three most common methods of recording a crime scene are: note taking, sketching, and photography. A detailed record of the crime scene and of the actions taken during the search of it, help the crime scene specialist to accurately recall events and to identify items of evidence later in a court of law.

How should wet evidence be handled?

Evidence that is wet or that may contain body fluids (blood, semen, etc.) must be air-dried completely. Such items should be packaged in paper bags/boxes. Known samples can be collected by rubbing sterile swabs against the cheek, inside the mouth.

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How do you collect wet and dry blood specimens in the crime scene?

Place thread on bloodstain with a pair of clean forceps or a clean cotton swab. Roll the thread on the bloodstain, so the stain is absorbed onto the thread. Repeat until a minimum of four threads are collected. Place the threads (and swabs, if used) in a secure area and allow them to air dry.

What should be done first at a crime scene?

7 Steps of a Crime Scene Investigation

  • Identify Scene Dimensions. Locate the focal point of the scene. …
  • Establish Security. Tape around the perimeter. …
  • Create a Plan & Communicate. Determine the type of crime that occurred. …
  • Conduct Primary Survey. …
  • Document and Process Scene. …
  • Conduct Secondary Survey. …
  • Record and Preserve Evidence.

What are the 4 things you should do to properly document a crime scene?

The categories are summary, scene (including a detailed body description if in a death investigation), processing, evidence collected, and pending.

What are the steps in the crime scene process?

Basic Stages for a Crime Scene Investigation — Possible Homicide

  1. Approach the Scene. …
  2. Secure and Protect the Scene. …
  3. Initiate Preliminary Survey. …
  4. Evaluate Physical Evidence Possibilities. …
  5. Prepare a Narrative of the Scene. …
  6. Capture the Scene Photographically. …
  7. Prepare the Crime Scene Sketch. …
  8. Conduct a Detailed Search.

How do you document a crime scene and what are salient points to consider?

Documenting the Crime Scene

  • Videotaping the Crime Scene. If available, a video camera is the first step to documenting a crime scene. …
  • Still Photography. Whether a video camera is available or not, it is absolutely essential that still photographs be taken to document the crime scene. …
  • Crime Scene Sketching.
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What are the 5 steps of crime scene investigation?

The basic crime scene procedures are physical evidence recognition, documentation, proper collection, packaging, preser- vation, and, finally, scene reconstruction.

How do you collect wet blood evidence?

Liquid blood evidence is generally collected from blood pools but can be collected off of clothing as well, using a gauze pad or a sterile cotton cloth. Once the sample is collected it must be refrigerated or frozen and brought to the laboratory as quickly as possible.

How can we preserve crime scenes?

Preservation of Evidence

  1. do not move anything unless absolutely necessary.
  2. to the extent possible, avoid contaminating evidence.
  3. photograph or video record the scene as well as individual objects before moving anything.
  4. protect forensic evidence from the elements.

How are footprints collected at a crime scene?

Tire tracks can be found in snow, mud, dirt, or sand, or even on a victim at a crime scene. These tracks can be collected by photographing, casting, lifting, and/or collecting the clothing from the victim.