What is the step 4 of CSI?

Asked by: Ellen Harris  |  Last update: April 24, 2026
Score: 4.5/5 (43 votes)

Step 4 in a Crime Scene Investigation (CSI) varies slightly by protocol but generally involves either Scanning the Scene (initial assessment) or the Primary Survey/Walkthrough, where investigators conduct a systematic initial look to plan the search, identify key evidence, and start documenting general conditions like temperature or smells before detailed processing begins. Some models place "Seeing the Scene" (photography/videography) as step 4, following securing, separating witnesses, and scanning, but the key action is the initial strategic overview.

What are the 7 steps of investigation?

The 7 steps of a crime scene investigation, often called the "7 S's," provide a structured approach: Secure the scene, Separate witnesses, Scan the scene, See the scene (document), Sketch the scene, Search for evidence, and Secure and Collect evidence, ensuring thoroughness from initial response to evidence preservation for a case.
 

What are the stages of crime scene investigation?

Crime scene investigation includes securing of crime scene, photography, proper search of crime scene, systematic documentation of the crime scene along with the suitable collection, packaging, preservation and transport of all the evidences encountered at a specific crime scene.

How to write a CSI report?

The notes and reports should be done in a chronological order and should include no opinions, no analysis, or no conclusions. Just the facts!!!! The crime scene investigator or evidence recovery technician should document what he/she sees, not what he/she thinks. The final report should tell a descriptive story.

What is the brushing collection method?

Another method of collection is brushing, this is where the surface is brushed with a clean tooth/paint brush and the evidence is then collected with paper or a container. The type of evidence that could be collected using this method could be, hairs, items in pocket Linings or items in soil."

The 7 Steps of CSI (Crime Scene Investigation)

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What are the 4 methods used in forensic investigation?

The primary tasks of forensic experts for which these people use such techniques are evidence analysis, fingerprint and DNA identification, drug examination, presence of poison in the human body, and examination of body fluids like blood, semen, urine, etc.

What is the 3-3-3 brushing method?

The 3-3-3 brushing method is a Korean oral hygiene guideline: brush 3 times a day, for at least 3 minutes each time, and do so within 3 minutes after a meal to prevent plaque and acid damage, with some variations also suggesting replacing your toothbrush every 3 months. It's a helpful routine for thorough cleaning, ensuring adequate time and post-meal removal of food particles, though waiting longer (around 30 mins) after acidic foods is often recommended to protect enamel.
 

What are the 5 steps of the investigation process?

A typical 5-step investigation process involves Planning, Data Collection, Analysis, Reporting, and Corrective Actions, focusing on gathering facts, identifying root causes (like poor design or management issues, not just human error), documenting everything thoroughly and impartially, and implementing changes to prevent recurrence, balancing speed with depth.
 

What are the 7 steps of report writing?

Here are seven steps to follow when writing a report from start to finish.

  1. 1 Choose a topic based on the assignment. ...
  2. 2 Conduct research. ...
  3. 3 Write a thesis statement. ...
  4. 4 Prepare an outline. ...
  5. 5 Write a rough draft. ...
  6. 6 Revise and edit your report. ...
  7. 7 Proofread and check for mistakes.

What is a CSI report?

CSI REPORTS are short-term research papers prepared in response to official inquiries. REPORTS are based mainly on secondary sources and provide basic information on the subject under consideration.

What are the 4 types of crime scenes?

Four main types of crime scenes, categorized by location, are Indoor (houses, offices), Outdoor (streets, fields), Conveyance (vehicles), and often a Combination or related Secondary Scene, each presenting unique challenges for evidence preservation due to environmental factors and contamination risks, requiring different investigative approaches. 

What are the 5 stages of the investigative cycle?

The key stages of the intelligence cycle typically include:

  • Planning and direction.
  • Collection.
  • Processing.
  • Analysis and evaluation.
  • Dissemination.

What are the common errors in investigations?

Common chain of custody errors includes not securing or storing the evidence properly, not documenting where the evidence was collected, not preventing the evidence from being altered, or not controlling who is allowed to handle the evidence.

How to mark evidence at a crime scene?

Mark the container with the appropriate information including item number, case number, date and initials of who collected it. 3. Collect all the wadding material discovered at the scene. Place each item into separate containers and mark with the appropriate information.

What are the 5 steps in processing a crime scene?

Crime-Scene Investigation and Evidence Collection: 5 Steps

  • Securing the Scene: Keeping Everything in Place. ...
  • Documentation: Capturing the Scene Through Photos and Measurements. ...
  • Examining and Identifying Evidence: A Keen Eye for Clues. ...
  • Careful Collection and Preservation: Protecting the Evidence Chain.

What are the 5 steps of a report?

While each report can have its own unique structure, most reports include the following basic features:

  • Executive summary. An executive summary is a standalone section that provides readers with a summary of your report findings.
  • Introduction. ...
  • Main body. ...
  • Conclusion.

What are the 5 C's of report writing?

For reports to help your team in any situation, they have to be clear, concise, complete, consistent, and courteous.

What are the 7 steps of the writing process?

The 7 steps of the writing process generally include Prewriting (brainstorming/planning), Researching, Drafting (writing the first version), Revising (improving content and structure), Editing/Proofreading (fixing errors), Sharing (getting feedback), and Publishing (finalizing and presenting the work), providing a structured way to turn ideas into polished content. 

What are the 7 steps to incident investigation?

The 7 steps of accident investigation typically involve: Securing the Scene, Gathering Information (photos, documents, witness statements), Analyzing Data (identifying immediate causes), conducting a Cause/Root Cause Analysis, developing Corrective Actions, Reporting Findings, and Implementing Changes to prevent recurrence, focusing on system failures, not blame. While steps can vary slightly by source, these core phases cover the essential process from incident response to prevention.
 

What are the 5 P's of investigation?

The five P's stand for “parts, position, paper, people and paradigms.” While the data in this case was collected by software, the method is sound and can be used to get great results without software.

What is the fourth step in the 6 basic steps to take following an incident?

Six steps for successful incident investigation

  1. STEP 1 – IMMEDIATE ACTION. ...
  2. STEP 2 – PLAN THE INVESTIGATION. ...
  3. STEP 3 – DATA COLLECTION. ...
  4. STEP 4 – DATA ANALYSIS. ...
  5. STEP 5 – CORRECTIVE ACTIONS. ...
  6. STEP 6 – REPORTING.

What is the Stillman's technique?

Stillman's Brushing Technique

For Stillman's technique, the toothbrush is placed at a 45-degree angle to the teeth and gums. Ensure that the bristles are partially on both the teeth and gums and a slight vibratory motion is used to remove plaque from the teeth and on top of the gum line.

What are signs I'm not brushing well?

Not caring for your teeth well or thoroughly enough can cause symptoms that include: Chronic bad breath (halitosis) Tooth sensitivity. Gums that bleed after brushing.

What is the 333 rule in Korea?

The "333 rule Korea" refers to a popular oral hygiene guideline promoting brushing teeth three times a day, for three minutes each time, and within three minutes after meals, a practice encouraged by the Korean Dental Association to combat strong food flavors and maintain oral health. This has fostered a cultural habit of brushing publicly, even in subways, viewing it as etiquette, unlike Western norms.