What Is The First Thing You Do At A Crime Scene?

What do you do at a 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.

Crime scene investigators collect evidence such as fingerprints, footprints, tire tracks, blood and other body fluids, hairs, fibers and fire debris..

What are the steps of an 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.

How long does it take to process a crime scene?

One of the significant factors is the size of the crime scene. A minor or mild crime scene process of clean up can take about four to ten hours. This will depend on the techniques and procedures used. However, crime scene cleaning can take up to forty-eight hours, especially in messy and severe scenarios.

What are the 4 steps to a crime scene sketch?

Observe and plan.Measure distances.Outline the area.Locate objects and evidence within the outline.Record details.Make notes.Identify the sketch with a legend and a scale.

What is the first step in an investigation?

The first is the formulation of a hypothesis. The hypothesis is a statement that outlines specific predictions that the investigator makes about the outcome of the study. There are two possible outcomes to any investigation. Either the supposition to the study is correct or it is wrong.

What should be done first at a crime scene?

Basic Stages for a Crime Scene Investigation — Possible HomicideApproach the Scene. … Secure and Protect the Scene. … Initiate Preliminary Survey. … Evaluate Physical Evidence Possibilities. … Prepare a Narrative of the Scene. … Capture the Scene Photographically. … Prepare the Crime Scene Sketch. … Conduct a Detailed Search.More items…•

What are the responsibilities of the first officer at a crime scene?

The article concludes with a basic five-step approach, ADAPT, that a first officer should be aware of when confronted or responding to a homicide crime scene: Arrest or apprehend the perpetrator; Detain and identify witnesses and/or suspects; Assess the crime scene; Protect the crime scene; and Take notes.

What are the 5 Steps to a crime scene?

Terms in this set (5)Interview witnesses/people involved to establish the theory of the case. … Examine the scene using a systematic search method. … Sketch the scene to create an overall diagram. … Photograph the scene, the evidence, the body to get detailed pictures of what everything looked like at that moment.More items…

Who arrives first at a crime scene?

Police officersPolice officers are typically the first to arrive at a crime scene. They arrest the perpetrator if he’s still there and call for an ambulance if necessary. They are responsible for securing the scene so no evidence is destroyed. The CSI unit documents the crime scene in detail and collects any physical evidence.

What’s the difference between a CSI and a forensic scientist?

Crime scene technicians primarily analyze the scene of a crime or accident and collect evidence. Forensic scientists analyze that evidence in search of clues pointing to a possible suspect, cause of death or other key piece of information.

What are the seven steps of a crime scene investigation?

7 Steps of a Crime Scene InvestigationIdentify 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. Identify potential evidence. … Document and Process Scene. … Conduct Secondary Survey. … Record and Preserve Evidence.

How do you start a crime scene?

7 ways to create a fake crime scene in your homeCrime scene tape. Seal off a staging area in one corner of your room or use it to restrict access to those messy rooms in your house you’d rather your guests didn’t see. … Chalk outline. … Bloody handprints. … Evidence markers. … Footprints. … Signs of a struggle. … Police presence.