Quick Answer: What Are The 7 Basic Steps In Crime Scene Investigation?

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

“The initial responding officer (s), upon arrival, shall assess the scene and treat the incident as a crime scene.

They shall promptly, yet cautiously, approach and enter the crime scene, remaining observant of any persons, vehicles, events, potential evidence, and environmental conditions.”.

What are the four patterns of evidence?

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

What is the purpose of a crime scene walk through?

The purpose of the walk through is to note the location of potential evidence and to mentally outline how the scene will be examined. The walk through begins as close to the point of entry as possible. The first place the investigators should examine is the ground on which they are about to tread.

What is the golden hour in investigation?

Magalong said the ‘Golden Hours’ or the first 72 hours of the initial phase of investigation of a major case such as murder, homicide or kidnappings/abduction is really crucial.

What are the 3 triangle of crime?

The Crime Triangle identifies three factors that create a criminal offense. Desire of a criminal to commit a crime; Target of the criminal’s desire; and the Opportunity for the crime to be committed. You can break up the Crime Triangle by not giving the criminal the Opportunity.

What are the 6 methods of investigation?

A six-step, structured approach to incident investigation (Fig 1) helps to ensure that all the causes are uncovered and addressed by appropriate actions.Step 1 – Immediate action. … Step 2 – Plan the investigation. … Step 3 – Data collection. … Step 4 – Data analysis. … Step 5 – Corrective actions. … Step 6 – Reporting.

What are two main responsibilities of a CSI at a crime scene?

More specifically, crime scene investigators are responsible for processing crime scenes for evidence, photographing crime scenes, packaging, labeling and transporting evidence, documenting autopsies, briefing investigators, writing reports and testifying in court.

What are the steps of an investigation?

The following steps should be taken as soon as the employer receives a verbal or written complaint.Step 1: Ensure Confidentiality. … Step 2: Provide Interim Protection. … Step 3: Select the investigator. … Step 4: Create a Plan for the Investigation. … Step 5: Develop Interview Questions. … Step 6: Conduct Interviews.More items…

What must be included on a crime scene sketch?

The following should be recorded on the sketch: • Address or location of scene. Case number. Date sketch was made and by whom. A key to identify the different objects in the sketch.

Which mapping method is the easiest but least accurate?

Baseline Mapping—This is the most basic—and least accurate—form of crime scene mapping. For this method, a baseline is developed or identified from which to conduct measurements.

What are the 3 tools of investigation?

Tools ​To establish facts and develop evidence, a criminal investigator must use these tools-information, interview, interrogation, and instrumentation. 3.

What are the 5 steps in crime scene investigation?

INTERVIEW, EXAMINE, PHOTOGRAPH, SKETCH and PROCESS.

What are some of the CSI basics?

Terms in this set (20)CRIME SCENE. ANY PHYSICAL LOCATION IN WHICH A CRIME SCENE HAS OCCURRED OR IS SUSPECTED OF HAVING OCCURRED.PRIMARY CRIME SCENE. THE ORIGINAL LOCATION OF A CRIME OR ACCIDENT.SECONDARY CRIME SCENE. … SUSPECT. … ACCOMPLICE. … ALIBI. … TESTIMONIAL EVIDENCE. … PHYSICAL EVIDENCE.More items…

What is the first S in the 7 S’s of crime scene investigation?

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 are the seven S in forensics?

The Seven S’s of Crime-Scene Investigation Scanning The Scene. Sketching The Scene. Separating The Witnesses. Securing And Collecting Evidence.

Who secures the 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.

What does CSI stand for?

Crime Scene InvestigationCSI means “Crime Scene Investigation (TV)”.

What is the Golden Rule of 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 4 types of photographs for a crime scene?

What three types of photographs are taken at crime scenes?Overall Photographs. Overall photographs, as the name implies, capture the global aspects of the crime scene. … Midrange Photographs. Midrange photographs transition the viewer from an “outsider looking in” perspective to a more involved perspective. … Close-up Photographs and Evidence Photography.

What should be photographed first at a crime scene?

At major crime scenes impressions should be photographed before they are casted. Photography is done first because casting the impression will destroy the original impression and eliminate the ability to photograph the impression afterward.

Who collects evidence at a crime scene?

A crime scene is any location that may be associated with a committed crime. Crime scenes contain physical evidence that is pertinent to a criminal investigation. This evidence is collected by crime scene investigators (CSIs) and law enforcement.