What are the rules for the crime scene investigator?

What is the fundamental rule in crime scene Investigation?

The key principle underlying crime scene investigation is a concept that has become known as Locard’s Exchange Principle. It states that whenever someone enters or exits an environment, something physical is added to and removed from the scene.

What responsibilities do crime scene investigators have?

Crime Scene Investigator Job Duties

Secure crime scenes to ensure that the evidence is not tampered with or contaminated. … Document and preserve all pieces of physical evidence. Attend and photograph autopsies. Maintain lab equipment and field equipment.

What are the five requirements in crime scene investigation?

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

What are 4 things the crime scene investigator is responsible for?

A Crime Scene Investigator is responsible for…

  • Working with law enforcement to secure the scene as to prevent the contamination of evidence.
  • Identifying and marking the areas of the crime scene.
  • Collecting, preserving, and packaging the physical evidence.
  • Maintaining detailed reports, logs and other tracking data.
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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 principles of investigation?

12 Basic Principles of Internal Investigations

  • Be fair and objective. …
  • Do not pre-judge. …
  • Avoid the appearance of bias. …
  • Plan and outline the investigation before starting. …
  • Investigate promptly. …
  • Keep the investigation separate and independent from the stakeholders. …
  • Never mislead a witness. …
  • Protect confidentiality.

Do CSIs carry guns?

Do the CSIs carry weapons? Investigators don’t actually come with a badge and a gun. At CSI, forensic analysts can wear a gun and a badge and interrogate bad guys. But it’s actually not that common.

What are the duties of an investigator?

Criminal Investigator duties and responsibilities

  • Investigate crime scenes and apply different investigation methods.
  • Initiate survey.
  • Construct detailed investigation reports.
  • Manage evidence.
  • Identify and prosecute perpetrators.
  • Generate initial theories.
  • Eliminate wrong theories.
  • Document the scene in detail.

Who are 5 main personnel will be in a crime scene?

The usual team involved at a crime scene including team leader, first officer arrived at scene, evidence collector, sketcher, and photographer. Their roles include the scene investigation and sketch, tagging, collection and photography of evidence.

What are the 4 search patterns for crime scenes?

Types of Crime Scene Searches

Common search patterns include the spiral, strip/line, grid, zone/quadrant, and pie/ wheel.

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