How does a crime scene work?

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.

What are the 7 basic steps in crime scene investigation?

What are the seven 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. …
  • Conduct Primary Survey. …
  • Document and Process Scene.
  • Conduct Secondary Survey.
  • Record and Preserve Evidence.

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 is evidence collected at a crime scene?

Photograph and document 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.

Who processes a crime scene?

Crime scene investigators document the crime scene. They take photographs and physical measurements of the scene, identify and collect forensic evidence, and maintain the proper chain of custody of that evidence.

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What are 4 steps to crime scene protocol?

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 4 different types of crime scenes?

Different types of crime scenes include outdoors, indoor, and conveyance. Outdoor crime scenes are the most difficult to investigate. The exposure to elements such as rain, wind, or heat, as well as animal activity, contaminates the crime scene and leads to the destruction of evidence.