Why may direct evidence and circumstantial evidence weigh so heavily in convicting a criminal?

1. This goes on page 4….remember to write the date beside it Objective: 8-29 SWBAT Describe the proper procedures for conducting a systemic search of crime scenes for physical evidence SWBAT describe proper techniques for packaging common types of physical evidence SWBAT explain the legal consideration at the crime scene (remember Do Nows are on page 8, they go directly under the last do now, you must include the date) DO NOW Why may direct evidence and circumstantial evidence weigh so heavily in convicting a criminal? What is the major difference between a rough sketch and a final sketch? Why must you make a rough sketch before you can make a final sketch? (why not just make the final sketch at the scene) The step after sketching the scene is….. 8-29

2. Review • Forensic science • LEP • 7s • EVIDENCE • Biological vs. Physical • Search for evidence • Secure and collect evidence

3. 4 Requirements for Evidence to be Admitted into Court: • 1)It must be legally obtained (search warrant) • 2)Must be relevant to the crime (material & probative) • 3)Witness must identify the item, identifying it’s origin • 4)Chain of Custody must be demonstrated (every person that handled must also be available to testify)

4. Search Warrants •Need probable cause •Need a detailed affidavit explaining why the authorities want to enter the home •Explains what specific items they are interested in locating & where they want to look •signature of a judge

5. Warrantless Searches • 1)Emergent Situations-police may enter a building because of emergency situation & evidence found can be used (but they can’t come back again without warrant (Mincey Case) • 2)Impending Loss of Evidence-person or situation might cause evidence to be lost (ex: fire, person flushing drugs down toilet) • 3)Lawful Arrest-when a person is arrested any property in his/her immediate control (vehicle, house) can be searched. • 4)Consented Search-when person gives consent

6. Search for evidence • The first step to gathering evidence is finding it • Many items may be visible but others may require more work • The starting point of a search is based on the crime Ex. Murder- entrance and exit Robbery- the safe

7. Search for evidence • Depends on the size of the area • Amount of investigators • Floor of a broom closet vs. the football field • Thoroughly and orderly

8. # of investigators And Size of scene

9. Chain of Custody • Every person that handles the evidence after it has been collected has to be accounted for • Here’s how it works: • A police office -> detective -> investigator -> lab technician -> attorney

10. The schedule for the rest of the week

11. Securing and Collecting evidence • All evidence is collected differently • Druggist Fold Remember Do NOT TEAR OFF THE SEAL • Recycle • Remove • Put back

12. Exit Ticket • 1. What could happen if the chain of custody wasn’t carried out correctly? • 2. How can a collusion effect a trial? • 3. What may happen if you “see the scene” before you “scan the scene”?