Question: What are the principles of crime scene investigation?

Understand crime scene security, approaching a scene, searches and documentation of evidence. Understand latent print recovery and documentation. Understand tasks related to trace evidence identification and recovery.

What are the 7 basic steps in crime scene investigation?

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 5 steps in crime scene investigation?

INTERVIEW, EXAMINE, PHOTOGRAPH, SKETCH and PROCESS.

What are the principles to be observed in handling all types of evidence?

First, the officer must locate and collect the physical evidence left at the scene; second, the evidence must be analyzed by a qualified technician to establish its usefulness in the case; and third, the integrity of the physical evidence must be maintained at all times.

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What are the 7 S’s in crime scene?

The Seven S’s of Crime-Scene Investigation

  • Securing The Scene.
  • Securing And Collecting Evidence.
  • Separating The Witnesses.
  • Sketching The Scene.
  • Seeing The Scene.
  • Scanning The Scene.
  • Searching For Evidence.

What is the first thing you do at a crime scene?

Conduct a primary survey/walkthrough – An initial survey of the scene is then conducted to prioritize evidence collection. During this walkthrough, the lead investigator will identify potentially valuable evidence, take notes and capture initial photographs of the scene and the evidence.

What are the three phases of criminal investigation?

Applied to the criminal realm, a criminal investigation refers to the process of collecting information (or evidence) about a crime in order to: (1) determine if a crime has been committed; (2) identify the perpetrator; (3) apprehend the perpetrator; and (4) provide evidence to support a conviction in court.

What are the basics of processing a crime scene?

Documentation, collection, and preservation of evidence are crucial steps in criminal investigation and often provide the basis for effective identification, documentation, prosecution, and conviction of perpetrators.

What is the golden rule in criminal investigation?

The Golden Rule in Criminal Investigation. “ Do not touch, alter, move, or transfer any object at the crime scene unless it is properly marked, measured, sketched and/or photographed .”

What are the different types of crime scene?

There are three types of crime scenes:

  • Outdoor.
  • Indoor.
  • Conveyance.

What are the 6 stages of evidence handling?

Incident response is typically broken down into six phases; preparation, identification, containment, eradication, recovery and lessons learned.

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What are the types of evidence?

The Four Types of Evidence

  • Real Evidence. Real evidence is also known as physical evidence and includes fingerprints, bullet casings, a knife, DNA samples – things that a jury can see and touch. …
  • Demonstrative Evidence. …
  • Documentary Evidence. …
  • Witness Testimony.

What are the three basic principles under the evidence Act?

CARDINAL PRINCIPLES OF LAW OF EVIDENCE: i) Evidence must be confined to the matter in issue. Ii) Hearsay evidence must not be admitted. Iii) Best evidence must be given in all cases.

What is the first S of the 7 S’s of crime scenes?

Terms in this set (7) responsibility of the first-responding police officer (first responder), safety of individuals is first priority. Preservation of evidence is second priority.

What should you not do at a crime scene?

Here are 5 things you should and should NOT do when a crime scene or traumatic incident occurs in your home, business or property.

  • 1 – Do NOT touch, or have anyone else touch anything. …
  • 2 – Do NOT clean it yourself, or have a family member or employee clean up.

What are the four patterns of evidence?

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

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