By Jan LeMay
Serious to the winning apprehension and prosecution of criminals, the task of amassing facts at against the law scene calls for wisdom, technical talents, persistence, and perseverance. frequently this job falls on only one person — the officer on regimen patrol tasks who's the 1st to reach on the scene of a criminal offense. Written through a professional with seventeen years adventure in legislation enforcement, CSI for the 1st Responder is a succinct advisor on the right way to safe, seek, establish, rfile, gather, and look after actual proof crucial for fixing a case and making the facts rise up in courtroom. a realistic, hands-on source to all features of crime scene research, this e-book covers: The method of the scene Securing the scene looking for and choosing facts Documenting the facts via notes and studies images and videotape Sketches and diagrams assortment and protection The investigative price of alternative varieties of facts Testimony and proposing proof in court docket better with real-life examples, the e-book offers case experiences enforcing the defined options. The case reports contain examples of profitable scene protection and documentation in addition to cautionary stories of inaccurate practices with classes discovered. additionally integrated with this publication is a speedy Reference advisor on CD-ROM, that are downloaded to patrol vehicle laptops or revealed and saved in a pocket for simple entry. Spanning the full scope of a case from preliminary discovery of facts to court docket presentation, this one-stop source allows legislation enforcement to nail down the facts they should end up the crime and get the conviction.
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Extra resources for CSI for the First Responder: A Concise Guide
If the hair is human in origin a determination as to race or ethnicity may be made. It can be determined if the hair was cut, pulled, or naturally shed. The color and length of the hair can be determined. It can be determined if the hair has been dyed or bleached. It can even be determined from which part of the body the hair originated. In addition to all of this, DNA can be extracted from hair and analysis can be performed to develop the DNA profile of the source of the hair. 4). If a DNA profile can be identified from hair, known exemplars from suspects, victims, and anyone else whom the hair and DNA profile should be compared to need to be collected.
Metals Metals may be involved as evidence in a case where a suspect may have used a metal tool to force open a door or window, drill into or cut open a safe, or even grind off serials numbers from stolen property. Metal fragments may be present at the scene, and they may remain on the tools used in the act and on the suspect’s clothes. 6). 6â•‡ Metal fragments found at the scene of a safe burglary. This should be packaged in a paper bindle and preserved for comparison to metal fragments from tools suspected to have been used in the crime.
On white bed sheets these fluid stains may be very difficult if not impossible to see with the naked eye. 2). The first responder may not be able to differentiate between stains of different biological fluid. For example, a saliva stain may look very much like a semen stain. All the first responder will know is that there is a stain present and must document and collect it properly. The determination of just what body fluid it is will need to be made at the crime lab. There are many chemical enhancement techniques that can be used to search for or enhance bloodstains.