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Crime Scene Investigator Job Description

The best thing to see if you are fit for a career as a crime scene investigator is going through the job description. CSI’s have a special place in law enforcement divisions. A crime scene detective job description will help you decide whether you are fit for this job or not. The scenarios shown on TV might differ to a great extent from the real life job experience.

Crime Scene Investigator- Job Description


A crime scene investigator deals with the investigation of crime scenes and the science behind law enforcement. This job is best for individuals who have an eye for detail and a keen interest in laboratory work. The basic overview of the job of a crime scene investigator are :

1. Gather Evidence

  • The first thing a crime scene investigator does is collect evidence at the crime scene.
  • He collects physical evidence and takes plenty of photographs of the crime scene.
  • Evidence, or the lack of it, is equally important.
  • For e.g, if someone reports a robbery and there is no evidence of forced entry, that too is evidence.
  • Gathering evidence from a crime scene can be a tedious task, taking several hours, and a crime scene investigator must be alert to avoid overlooking any critical evidence.

2. Lab Work

  • Evidence collected must be sealed securely to avoid tampering and contamination.
  • Each piece of evidence is recorded, including its location, and sealed and sent to the forensic lab.
  • Evidence collected by a crime scene investigator is received at the crime labs, where it is checked and tested for any clues.
  • They can reveal any DNA clues or give an indication as to how the crime took place.

3. Equipment


  • A CSI must ensure that the equipment and clues must be handled properly, as improperly handled clues can ruin a case.
  • Equipment can be very simple, like tweezers and cameras etc, or very complex, like those used for blood spatter analysis and finding fingerprints and DNA.

4. Paperwork

  • After investigation and collecting evidence, investigators must write down official documents which they can use to testify in courts.
  • These reports are then stored for future references.

5. Misconceptions

Due to TV serials, there has been misconception about what crime scene investigators actually do.

They do not deal with dead bodies. Although dead bodies remain at the scene of crime for quite some time, it is the job of medical examiner to examine it.
  • They also do not interrogate suspects. It is the job of case investigators.


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