The sketch is not done to scale, can be drawn with any implement (crayon, chalk, pencil, pen, etc.), and is very rough artistically. Sketches (Figure A) are developed while on-scene, typically during the crime scene assessment/preliminary scene evaluation phase to assist with development of a strategic plan for processing. Courtesy of Sarah Bedishįigure B-An example of a final sketch. Roughįigure A-An example of a rough sketch. Two types of sketches are produced with regards to crime scene documentation: rough sketches, and final/finished sketches. Sketch the entire scene, the objects, and the evidence.Sketch all serious crimes and accident scenes after photographs have been taken and before anything is moved.Well-prepared sketches and drawings help judges, juries, witnesses, and others to visualize the crime scene. It assists in presenting the case in court.It assists in preparing the written investigative report.It assists in interviewing and interrogating.It helps to create a mental picture of the scene for those not present.It establishes the precise location and relationship of objects and evidence at the scene.It relates to the sequence of events at the scene.
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It accurately portrays the physical facts.Why is a sketch important to crime scene documentation? Often photographer/camera positions may be noted within a sketch also. A sketch is the most simplistic manner in which to present crime scene layout and measurements. The sketch serves to clarify the special information present within the photo-graphs and video documentation, because the other methods do not allow the viewer to easily gauge distances and dimensions. Sketching-A crime scene sketch is a permanent record of the size and distance relationship of the crime scene and the physical evidence within it. Importantly, this information may be presented in court. The end purpose of documentation should be the successful notation of all observations made within the scene of the crime, which will ensure the individual engaged in the documentation efforts will best be able to recall the events in the future. For the purposes of this text, there are four primary methods of documentation that are involved in CSI. It is the purpose of crime scene documentation to record and preserve the location and relationship of discovered evidence as well as the condition of the crime scene as it was when the documenter was observing it. This is often the most time-consuming but also the most important step in crime scene investigation. (Editor’s Note-The excerpt focuses on documenting a scene with crime-scene sketching and mapping techniques.)ĭOCUMENTATION EFFORTS at the crime scene begin the moment that an officer gets a call and continue until the case is closed. Dutelle, An Introduction to Crime Scene Investigation
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This is an excerpt from the new book by Aric W.