The Crime Scene.

Slides:

Advertisements

Similar presentations

Review Units 2 and 3 Physical Evidence. What does the 1 st officer at the scene need to do after obtaining medical assistance? Secure the Scene Physical.

Advertisements

Processing the Crime Scene. First responders job: –SAFETY first (scene and victims) –Secure the scene People, press Don’t move body w/o consent of coroner.

Types of Evidence bsapp.com. Documents Hand written Hand written Type or Printed Type or Printed Authenticity? Authenticity? bsapp.com.

Forensic Science. FORENSIC SCIENCE: The study and application of science to legal matters. Forensics derives from Latin forensis meaning “a public forum”

Something legally submitted to a competent tribunal as a means of ascertaining the truth of any alleged matter of fact under investigation before it.

F.Y.I. The most common way for crime-scene personnel to become exposed to infectious blood borne pathogens, is through injuries involving sharps (needles,

General Science 1 Spring ‘08 Adapted from T. Trimpe 2006

Forensic Science T. Trimpe 2006

Crime Scene Basics.

Chapter Physical Evidence. OBJECTIVES (don’t write) Review the common types of physical evidence encountered at crime scenes, Explain the difference.

Evidence Evidence. Direct Vs. Circumstantial Evidence Direct evidence is testimony or other proof which expressly or straight-forwardly proves the existence.

Chapter 4 Forensics/Physical Evidence. Types of Evidence Physical Evidence Direct Evidence Circumstantial/ Indirect Evidence Trace Evidence Associative.

Crime Scene Investigation

Chapter 3 Physical Evidence. Any & all objects that:  establish a crime  link a crime to its victim  link a crime to its perpetrator Must be recognized.

Crime Scene Processing the Crime Scene.  “Physical evidence encompasses any and all objects that can establish that a crime has been committed or can.

3-1 PRENTICE HALL ©2008 Pearson Education, Inc. Upper Saddle River, NJ FORENSIC SCIENCE An Introduction By Richard Saferstein PHYSICAL EVIDENCE Chapter.

Forensic Science T. Trimpe 2006

Unit 2: Evidence Please pick up Unit 2 Packet A!.

Physical Evidence Chapter 3. Types of Physical Evidence Blood, semen, saliva Document Drugs Explosives Fibers Fingerprints Firearms and ammunitions Glass.

Physical Evidence Forensic Fuel Chapter 3. Lecture Highlights  Negative Controls  Comparison and Identification  Class vs. Individual Characteristics.

Objective: You will be able to explain the basics of taking notes at a crime scene Do Now: Read “Secure and isolate the crime scene” on p. 34/35 What.

8 th Grade Forensic Science T. Trimpe 2006

So you have a crime scene… Goal: Attain physical evidence Goal: Attain physical evidence Secure the area Secure the area Record scene Record scene Rough.

Chapter 2 The Crime Scene. Crime Scene The location & surrounding areas where a crime has been committed.

The Crime Scene.  The location & surrounding areas where a crime has been committed.

Do Now: get handout and paper bag Take out HW Work on the Q’s below: Agenda: Collection of evidence Types of Evidence HW: Sock prelab Prep lab notebook.

CTE Forensics/Law & Public Safety 1-2 Unit 2/8 Collection of Crime Scene Evidence.

O’Connor/Chapter 3. Common types of physical evidence  Blood, semen, & saliva  Documents  Drugs  Explosives  Fibers  Fingerprints  Firearms & ammunition.

PURPOSE OF COLLECTION AND EXAMINATION Aids in solution of case Aids in solution of case Develop MO’s or show similar MO’s Develop MO’s or show similar.

Forensic Science T. Trimpe 2006

NOVEMBER 7, 2012 WARM-UP: STANDARD-SFS1b. Distinguish and categorize physical and trace evidence. EQ: How is physical evidence analyzed? Sit quietly, and.

Civil vs. Criminal Law CIVIL LAWCRIMINAL LAW  filed by a private party. o a corporation o an individual person  Penalty: a guilty defendant pays the.

Physical Evidence. Examples shown are possible evidence that may be found and collected at the crime scene, but are NOT all inclusive.

Chapter 3 Physical Evidence. Common Types of Physical Evidence Blood, semen & saliva Blood, semen & saliva Documents Documents Drugs Drugs Explosives.

Unit 2: The Crime Scene Mr. Ross Brown Brooklyn School for Law and Technology.

Chapter 4: Collection of Crime Scene Evidence. © 2013 by Pearson Higher Education, Inc Upper Saddle River, New Jersey All Rights Reserved Crime.

Forensic Science. CRIME SCENE: Any physical location in which a crime has occurred or is suspected of having occurred. PRIMARY CRIME SCENE: The original.

1 Forensic Science Chapter 3: Physical evidence. 2 Biologicals Blood, semen, and saliva.  Liquid or dried  Human or animal  on fabrics  Cigarette.

The Crime Scene (2) Old Crime. Clip 1 Clip 2 What Is A Crime Scene? A dynamic environment which begins to change immediately after the criminal action.

PHYSICAL EVIDENCE.

An Introduction to Evidence

Crime Scene Basics Forensic Science.

Crime Scene Basics Forensic Science

Crime Scene Basics Forensic Science.

Class Name, Instructor Name

The Crime Scene.

Chapter 3 Evidence.

Crime Scene Basics.

Goal: to recognize, document and collect evidence at a crime scene

Unit #2 – Crime Scene Basics

Types of Evidence bsapp.com.

Crime Scene Basics Forensic Science.

Types of Evidence bsapp.com.

How to Process the Crime Scene

The Crime Scene.

Chapter 2 and 3 Evidence and Crime Scene

Crime Scene Basics Forensic Science

8th Grade Forensic Science

Crime Scene Basics Forensic Science.

6. Searching for Evidence

Evidence "Anything which is legally submitted to a competent tribunal as a means of ascertaining the truth of any alleged matter of fact under investigation.

Crime Scene Basics Forensic Science

Types of Evidence bsapp.com.

Physical Evidence Common types of Physical evidence Identification of comparison of Physical evidence Individual and class characteristics Class evidence.

Bonjour! Do Now: take out HW Agenda: Crime Scene Jon Benet Case HW:

Crime Scene Basics Forensic Science

Physical Evidence.

The Crime Scene.

Crime Scene Investigation

Evidence Evidence can be divided into two broad types:

Presentation transcript:

The Crime Scene

Crime Scenes Tell A Story Through Physical Evidence = any and all objects that can establish that a crime has been committed or can provide a link between a crime and its victim or a crime and its perpetrator

3

Crime Scene Don'ts No Eating No Drinking No Smoking 4

Crime Scene Processing Establish Legality of Search 4th , 5th, 6th, 14th Amendment Protections Can search without warrant if: a. consent given b. life in danger c. immediate property of arrestee d. evidence in danger of destruction Secure/Isolate Scene Encounter Site Attack Site Crime Site Victim Dump Site Vehicle Disposal Site 3. Search Scene and Define its Borders 5

Search Patterns Spiral Line Grid Zone 6

What Search Type?

Buried Sites Follow Archeology Protocols 8

Levels of Search Phase 1 Examine scene with EYES ONLY Mark potential evidence Photograph Draw Take Notes Measure distances of evidence from fixed points 9

Crime Scene Sketch 10

Crime Scene Processing Phase 2 Collect and store evidence appropriately Also collect control samples Body Bag Paper bags Pill bottles Tweezers+Tools Empty Paint Cans Manila envelopes Swabs Vacuum 11

What type of evidence is left at scene? Blood Paint Petroleum Products Plastic Bags Powder Residue Serial Numbers Soil and Minerals Tool Marks Wood and Vegetative Matter Semen Saliva Documents Drugs Explosives Fibers Prints Firearms and Ammunition Glass Hair Bodies/Parts Impressions

Good Evidence vs. Better Evidence Class characteristic evidence Blood type Car paint Clothing fibers Individual characteristic evidence DNA Fingerprints

Crime Scene Processing Large areas many be sawed out and transported Cars removed to lab garage

Crime Scene Search Phase 3 (most intrusive) Open drawers Turn over items in scene Look in clothes Develop latent prints Spray Luminol Remove carpet and wall sections 15

Chain of Custody Validates authenticity, validity, integrity of evidence 16

Crime Scene Safety Infectious materials Wear gloves, have biohazard bags, shoe covers, Kleengard suits and masks, disposable writing instruments

Crime Scene Safety Sharps Be alert and once encountered they are packaged No eating, drinking, smoking or makeup application at scene.