CJ210: Unit 2

1. CJ210: Unit 2 Crime Scene Processing

2. FYI • Any questions before we begin about anything? • Unit 2 Seminar-Chain of Custody-Modus Operandi (MO)-Criminal Profiling-Importance of recognizing crime scene clues-Responsibility of first officer and first investigator arriving at the scene • -other

3. What do we know about crime scenes?

4. Crime Scenes • Initial response may provide only chance to recognize, record, and collect physical evidence • other • Victim • Criminal eyewitness • Position and boundaries are defined • Secure crime scene • Physical evidence discovered and collected • Crime reconstructed (if needed) • Offender and evidence at crime scene (may be left behind)

5. What is the purpose of a crime scene search?

6. Crime Scene Search • Develop associative evidence (find evidence that could link a suspect to the crime or the victim) • Seek answers: (What happened? How, when, and where did it happen?) • Scene must “first” be carefully recorded and photographed • Other reasons (see bottom of page 112)

7. Arrival of The First Officer & First Investigator Duties • See pages 113-114 • Discovery of Physical Evidence“Forensic scientists, crime scene specialists, and latent print experts are the individuals whose job apply science and technology to the solution of criminal acts. They shoulder an important role in the criminal justice system. Their skill and knowledge in the criminal investigation may establish the innocence or guilt of a defendant. Professional ethics and integrity are important to their work.” (page 114)

8. Other Information To Review & Consider • Walk-Through and Search; pages 116-117 • Recording Conditions & Evidence Found At The Crime Scene; pages 117-118 • Photographs & Sketches; pages 118-123 • Collection & Preservation; page 123, and pages 128-133 Appendix 1: “The FBI has prepared a helpful set of explicit recommendations and instructions, which are reprinted.”

9. What is the chain of custody?

10. Chain of Custody • Or sometimes called chain of evidence. ‘Documentation of what has happened to evidence from the time it was discovered until it is needed in court, including every person who has had custody of the evidence and why.’ • Pages 123-127

11. What is modus operandi (MO)?

12. Modus Operandi (MO) • ‘Characteristic way a criminal commits a specific type of crime, an offender’s pattern of operation (method of preparing for and committing a crime).

13. What does criminal profiling mean to you?

14. Criminal Profiling • ‘Method of suspect identification that attempts to identify the individual’s mental, emotional and psychological characteristics. (Also called psychological profiling). • Pages, 139-142 • Other: Through eyewitnesses may provide the investigator with answers to the six questions of who, what, where, when, why, and how. Do not forget about the five senses also: Sight, Smell, Hearing, Taste, Touch

15. Wrap Up • Well class we are winding down with the unit 2 seminar. • I just wanted to say thanks and if you have any questions or need anything this week let me know. • Thanks for attending, participating, and staying focused • Do not forget, seminar, discussion, and quiz for unit 2 • I will stay online to answer questions • Again, thanks.