. Discuss the proper collection of evidence at the origin of a fire that is suspected of having been started with gasoline. Describe the proper submission of controls for laboratory examination.

proper collection

An Effective Investigation to a Crime Scene

This case file should be a record of the actions taken and evidence collected at the scene.

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2. Discuss the proper collection of evidence at the origin of a fire that is suspected of having been started with gasoline. Describe the proper submission of controls for laboratory examination.

Arson is hard to prove according to Barry Goetz in Law and Society Review 1997. He explains that arson has been called the “perfect crime” because fires and the act of firefighting destroy evidence. Overhaul operations, which involve searching the spaces between floors and walls for hidden sources of flame after a major blaze has been extinguished, further alter the fire scene. To make matters worse, fire fighters are so busy preventing fires that they may seem less concerned about fire prevention and arson detection (Goetz, 1997, 557). Therefore, the actions taken at the outset of an investigation at an arson scene can play a pivotal role in the resolution of a case.

The crime scene technician has the initial responsibility for collecting physical evidence. The success of the forensic scientist is often dependent upon the capabilities of the crime scene technician. The crime scene technician is concerned with collection of facts that will lead to the ultimate solution of the crime. As in the example above, crime scene photographs, e diagrams and the collection of physical evidence or trace evidence for chemical accelerants can prove the crime of arson.

Crime scene investigators should identify and properly document, collect, and preserve evidence for laboratory analysis. Specifically, investigators should take precautions to prevent contamination. Document the location of evidence gathered using written notes, sketches, photographs, photo and video logs, an evidence recovery log, evidence tags, and container labels. When evidence must be excavated, additional photographs may be of value. It is important to gather evidence in any areas …,,,

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