Processing the Crime Scene KendallHunt Publishing Company 1

Processing the Crime Scene Kendall/Hunt Publishing Company 1

The Seven S’s of Crime-Scene Investigation 1. 2. 3. 4. 5. 6. 7. 2 the Scene the Witnesses the Scene for Evidence and Collecting Evidence

1. Securing the Scene First Officer on the Scene A the crime scene, determines the nature of the crime and assist the injured D the witness A the perpetrator (if possible) P the crime scene from destruction/addition of evidence T Kendall/Hunt Publishing Company 3

2. Separating the Witnesses • Witnesses must not be allowed to • Investigators will the witnesses’ accounts to each other Kendall/Hunt Publishing Company 4

3. Scanning the Scene 4. Seeing the Scene n Scanning the Scene n Seeing the Scene n Where do need to be taken? n Crime scene examiner will take photos n Primary vs. crime scene n Overall area and photos will be taken Kendall/Hunt Publishing Company 5

5. Sketching the Scene Crime Scene Sketch Date: August 14, 2005 Criminalist: Ann Wilson Time: 11: 35 am Location: 4358 Rockledge Dr. , St. Louis, Mo. N 5 ft Kendall/Hunt Publishing Company 6

6. Searching for Evidence Search Methods pattern—basically a double-line search; effective, but time-consuming pattern—best in large, outdoor scenes pattern—most effective in houses or buildings; teams are assigned small zones for searching pattern—may move inward or outward; best used where there are no physical barriers Kendall/Hunt Publishing Company 7

7. Securing and Collecting Evidence Packaging n Most items should be packaged in a primary container and then placed inside a secondary one. n Trace evidence may be placed on a piece of paper which is then folded in a particular way called a n These are then placed inside other containers such as paper bags, plastic bags, etc. Kendall/Hunt Publishing Company 8

Chain of Custody n There must be a of all people who have had of an item of evidence n Evidence container must be marked for identification. n Collector’s initials should be placed on the seal. n If evidence is turned over to another person, the transfer must be recorded. Kendall/Hunt Publishing Company 9

Video n https: //www. youtube. com/watch? v=ZZHf 5 G 8 Mu. Uw Kendall/Hunt Publishing Company 10