CSI for the First Responder: A Concise Guide by Jan LeMay

By Jan LeMay

Critical to the winning apprehension and prosecution of criminals, the activity of accumulating proof at against the law scene calls for wisdom, technical talents, persistence, and perseverance. usually this activity falls on only one person ― the officer on regimen patrol tasks who's the 1st to reach on the scene of against the law. Written by means of knowledgeable with seventeen years adventure in legislation enforcement, CSI for the 1st Responder is a succinct advisor on the way to safe, seek, establish, rfile, acquire, and protect actual facts crucial for fixing a case and making the facts rise up in court.

A sensible, hands-on source to all facets of crime scene research, this e-book covers:

  • The method of the scene
  • Securing the scene
  • Searching for and choosing evidence
  • Documenting the facts via notes and reports
  • Photography and videotape
  • Sketches and diagrams
  • Collection and preservation
  • The investigative worth of alternative varieties of evidence
  • Testimony and providing proof in courtroom

Enhanced with real-life examples, the e-book offers case reviews imposing the defined concepts. The case experiences contain examples of profitable scene protection and documentation in addition to cautionary stories of faulty practices with classes discovered. additionally integrated with this ebook is a quickly Reference Guide on CD-ROM, which are downloaded to patrol motor vehicle laptops or revealed and stored in a pocket for simple entry. Spanning the complete scope of a case from preliminary discovery of facts to court presentation, this one-stop source allows legislations enforcement to nail down the facts they should turn out the crime and get the conviction.

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Extra info for CSI for the First Responder: A Concise Guide

Sample text

Developed from the buccal swab of the subject and is then compared to the DNA profile developed from the evidence sample as a means of verifying the CODIS hit. CODIS can also be helpful in solving cold crimes. DNA crime scene samples that are entered into CODIS today may not match any of the existing DNA profiles in the known offender catalog. However, the unknown DNA profile from the crime scene evidence stays in the system and will be searched against future known DNA profiles as they are entered into the system.

But the DNA profile from the doorbell placed him at the scene. When attempting to collect trace DNA the first responder must be creative but practical. It is only necessary to swab surfaces that are believed to have been in contact with the suspect. For example, a forced-open window frame, a doorknob, or a burglary tool may contain trace DNA from the suspect. It is important, however, not to overlook the possible presence of fingerprints in an attempt to collect trace DNA. It may be best to first process the pried-open window for fingerprints.

A tape measure between two fixed objects within the scene. The 0″ point on the tape measure becomes the baseline’s datum point, or reference point. Measurements are taken at right angles from the baseline to each item and where that right angle intersects on the baseline. 9). A baseline could also be established along a straight fixed structure such as a fence line or wall. The datum point would be established at one end or corner. Measurements are then taken at right angles to the item, recording the distance from the baseline to the item, and the distance to the intersecting right angle from the datum point.

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