STOP! The FIRST critical step when dealing with a crime scene is: TO SECURE THE CRIME SCENE ;so none of the evidence is jeopardized.

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Presentation transcript:

STOP! The FIRST critical step when dealing with a crime scene is: TO SECURE THE CRIME SCENE ;so none of the evidence is jeopardized

HOW TO USE COLLECTIVE EVIDENCE Observe Interpret Observations There are 3 methods to a crime scene recording :  Photography  Sketches  Notes THESE ITEMS LISTED SHOULD BE COLLECTED FROM DESEASED VICTIMS AND SENT TO A FORENSICS LABORATORY Clothing Fingernail strapings Head and Pubic hair Blood Bullets Vaginal Anal and Oral swaps Hand swaps A forensics investigator will need to:

HOW YOU STORAGE EVIDENCE? The main objective in collecting and packaging physical evidence is:  It is important to package items in separate containers, because it prevents cross- contamination  TIP: Ordinary mailing envelopes not to be used for packaging evidence, because powders and particles will leak from the corners  A druggist fold is PERFECT way to package small amounts of trace evidence, because it is folding one end of the paper over one-third, then folding the other ends over that. Then tucking the outer edges into each other it produces a closed container so that the evidence wont fall out  TIP: Bloodstained evidence should not be stored in airtight containers, moisture may increase mold growth which destroys evidence  Bloodstained evidence should be collected in a Manila folder, paper bag, or packaging paper is better to use

HOW DO YOU STORAGE EVIDENCE? It is important to include a brief description of the case history on a evidence submission form,it allows examiners to analyze logical sequence and make proper comparisons and to search trace quantity of evidence 3 BASIC TYPES OF PROTECTIVE CLOTHING THAT INVESTIGATORS USE TO KEEP FOM CONTAMINATION IS: Gloves Coveralls Shoe covers  Main thing in collecting and packaging evidence is to make sure that no change happens from the time evidence is removed to the time it reaches the crime lab  Make sure the item is kept in original condition as found at the crime scene A BRIEF LINK OF FORENSICSS COLLECTING EVIDENCE:

Maintaining a proper chain of custody is IMPORTANT because:  This makes sure that evidence will withstand inquires of what happened from the time of when forensics found it to the moment it hits court Possible consequences of failing to properly maintain Chain of Custody :  Failure of up keep can easily be led to questions about evidence Definition : It is a list of all people who came into possession of an item of evidence.