Crime Scene Search Methods

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Crime Scene Search Methods • Conducting a Search for Evidence • Must be thorough and systematic • Do not make assumptions • Consider any pertinent evidence and do not overlook details • Failure to do so can lead to accusations of negligence or of covering up the evidence • Field Evidence Technician • Responsible for conducting evidence search • Mainly looking for fingerprints, footprints, tool marks, hairs, fibers and also possible trace evidence carriers. • Should also photograph the crime scene • • Before The Search Begins • Ensure scene is controlled • Brief all searchers involved • Establish speed and areas of responsibility • Determine a starting point • Establish a command post • Maintain communication among all people involved • Rotate people through areas to ensure more than one person looks at each area to reduce the chance that a detail is missed. • • Crime Scene Search Patterns: Spiral Search • Spiral search method- Search starts at an outer point and gradually moves toward the center… or… • Start at an inner point and move outward away from the center • Crime Scene Search Patterns: Grid Method • Grid method- Crime scene divided into a grid and each grid segment is searched • Crime Scene Search Patterns: Line Search • Line or parallel search- Crime scene divided into strips and each strip is searched • Crime Scene Search Patterns: Zone Search • Quadrant or zone search- Crime scene divided into quadrants and each quadrant is searched • Search Pattern Selection • The proper method selected is based on… • Size and type/location of area • Indoor or outdoor? • Personnel and equipment • How many people? • What equipment is needed and what do you have access to? • Type of crime was committed • This impacts the type of evidence to be collected • • Evidence from Victim • May be collected by the medical examiner • Evidence often includes… • Fiber from clothing • Hair from head and pubic areas • Blood • Hand swabs for gun powder • Photographs • • • Link to Lecture Slides: https://drive.google.com/file/d/1H7in... • *Due to the description character limit the full work cited for Crime Scene Search Methods can be viewed at... https://drive.google.com/file/d/1JVEy...

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