Crime Scene procedures and search methods:

Preliminary Survey

A crucial first step in a crime scene investigation to ensure necessary steps are taken before processing the scene.

Initial Walkthrough

An initial survey of the crime scene to identify potential evidence and assess immediate threats without disturbing evidence.

Grid Search Method

A search technique that divides the crime scene into a series of smaller areas to be searched systematically in a double pass.

Spiral Search Method

A search technique involving expansion outward from a central point in a circular pattern, effective in confined spaces.

Search Warrant

A legal document required to conduct a search of a property to collect evidence that is admissible in court.

Chain of Custody

The process of maintaining and documenting the handling of evidence to prevent contamination and ensure integrity.

Securing the Crime Scene

Establishing barriers and restricting access to preserve evidence during an investigation.

Environmental Assessment

Evaluating factors such as weather, lighting, and contamination risks that may affect evidence.

Documentation of the Search Process

An initial report detailing the steps taken during a preliminary survey and initial findings.

Hazard Identification

Recognizing biological or environmental dangers at a crime scene and implementing appropriate safety measures.

Contents of Preliminary Surveys

Preliminary surveys include evaluating the scene, identifying potential evidence, assessing safety risks, and establishing initial control measures.

No Search Warrant Needed

A search warrant is not required in exigent circumstances, such as preventing immediate harm, the destruction of evidence, or when evidence is in plain view.

Who does the Chain of Custody consist of?

The chain of custody consists of individuals who handle evidence, including investigators, forensic analysts, law enforcement officers, and court personnel, all of whom must document their interactions with the evidence.