How to proceed a crime scene?

Processing a Crime Scene Chapter 3 Processing a Crime Scene  I-solate and secure the scene D-ocument the scene S-earch for evidence C-ollect and package evidence, maintaining the chain of custody S-ubmit evidence to the crime lab for analysis Kendall/Hunt

Steps: Secure the area with the police tape Inspect the crime scene Put the number tags near evidences Take photos of the crime scene and evidences Sketch on a sheet of paper (rough) Write a summary of the crime scene (rough) Re-sketch the crime scene (finished) Collect and package evidences Write a report (crime scene reconstruction)

Sketches Once photos have been taken, the crime-scene investigator sketches the scene Rough Sketch a draft representation of all essential info & measurements at a crime scene. This sketch is drawn at the crime scene. It shows dimensions & location of objects. Include North. Objects are located in the sketch by distance measurements from 2 fixed points. All measurements are made w/ a tape measure.  The simplest way to designate an item is to assign it a # or letter. A legend must be placed below the sketch. Finished Sketcha precise rendering of the crime scene, drawn to scale. SKETHCHES ·       Once photos have been taken, the crime-scene investigator sketches the scene ·       Rough Sketch-a draft representation of all essential info & measurements at a crime scene. This sketch is drawn at the crime scene. It shows dimensions & location of objects. Figs 2-4 & 2-5 pp. 47 & 48 ·       On the sketch, North should be labeled. ·       Objects r located in the sketch by distance measurements from 2 fixed points. All measurements r made w/ a tape measure. ·       The simplest way to designate an item is to assign it a # or letter. A legend must be placed below the sketch. Finished Sketch-a precise rendering of the crime scene, drawn to scale.

Information On Evidence Packaging The following information should be included on evidence packaging: Location of crime scene Location of evidence at scene and time of collection Personnel who collected the evidence Condition of item at time of collection Chain of Custody log

Packaging the Evidence Evidence is placed in a paper bindle. The size of the bindle depends on the size of the evidence. Entire object should be sent to the lab. Each different item must be placed in separate containers. Packaging evidence separately prevents cross contamination. Plastic bags used for hair, fiber, glass evidence small amts of trace evidence can be conveniently packaged in a carefully folded paperdruggist fold: folding one end of the paper over 1/3, then folding the other end (1/3) over that, & the repeating the process from the ther 2 sides. After the paper is folded, the outside 2 edges r tucked into each other to produce a closed container. Evidence is packaged in a paper bindle. An evidence log and a chain of custody document must be attached to the evidence container. ·       Entire obj should be sent to the lab ·       Each diff item must be placed in separate containers. Packaging evid separately prevents cross contamination. ·       Forceps can be used to pick up small obj ·       Unbreakable plastic pill bottles excellent containers for hair, fiber, glass evid Small amts of trace evid can be conveniently packaged in a carefully folded paperdruggist fold: folding one end of the paper over 1/3, then folding the other end (1/3) over that, & the repeating the process from the ther 2 sides. After the paper is folded, the outside 2 edges r tucked into each other to produce a closed container. Chain of Custodythe documented and unbroken transfer of evidence

"Golden Rule" of Crime Scene Investigation/Management "Never touch, change, or alter anything until it has been documented, identified, measured, and photographed . . . when a body or article has been moved, it can never be restored to its original position." "Golden Rule" of Crime Scene Investigation/Management a. "Never touch, change, or alter anything until it has been documented, identified, measured, and photographed . . . when a body or article has been moved, it can never be restored to its original position."

Crime Scene Reconstruction CRIME SCENE RECONSTRUCTIONinvolves forming a hypothesis of the sequence of events from before the crime was committed through its commission; It’s a method used to support a likely sequence of events at a crime scene by observing, evaluating physical evidence. Reconstruction is a team effort that involves putting together many different pieces of a puzzle. Using physical evidence he can hypothesize about what occurred, where it occurred & when it occurred. CRIME SCENE RECONSTRUCTIONinvolves forming a hypothesis of the sequence of events from before the crime was committed through its commission; method used to support a likely sequence of events at a crime scene by observing & evaluating physical evidence & statements made by those involved. Reconstruction is a team effort that involves putting together many diff pieces of a puzzle. The collection & documentation of phys evid is the foundation of a reconstruction. A reconstruction supports a likely sequence of events by observing & evaluating physical evidence & statements made by those involved. The investigator captures the nature of the scene on an initial walk through. Using phys evid he can hypothesize about what occurred, where it occurred & when it occurred.