CRIME INVESTIGATOR

Crime Investigator



Crime Scene Investigator

Introduction

Forensic examiner or crime scene investigators (CSI) are best known career in forensics. They are responsible for the evaluation of the crime scene evidence. However, the secure, packages and physically label that evidences for analysis and evaluation with repairing comprehensive reports what they observe on the scene and activities that conducted at the scene. Crime scene investigator later testifies in court about the evidence found and the processing techniques used at the scene. Cases that crime investigator investigates for comprise of sexual assaults, armed robbery, homicides home invasions and crimes against property such as burglaries. Work time commonly used in processing crime scenes that are attending autopsies, transporting evidence and briefings, in addition to discussion with law, enforcement agencies necessitate guidance (Kocsis R., 2006).

Discussion

A crime investigated largely depends upon what type of crime committed. Investigating officers will begin by gathering a variety of evidence and placing it in bags. Crime scene units called to take photographs, dust for fingerprints and perform blood spatter analysis. They make an effort to collect hairs, fibers, dried blood and bodily fluids that may prove relevant to the case. Crime scene investigators will often use a vacuum to collect minute pieces of trace evidence. All the physical evidence then taken to a forensic lab for testing.

Blood Stains

Blood that is in liquid form should be collected on gauze pad or some clean hygienic cotton cloth, and let it get dry thoroughly at room temperature. It should be frozen immediately possible and transport to the Laboratory as quickly as possible. The sample become useless after 48 hours. Allow the sample to get dry if the laboratory is not near the victim place. It should be known that placing the stained material in heat, or under sunlight for drying purpose will make the evidence useless instead allow that stain to dry completely in the air by hanging cloth in adequate ventilation.

If it is unable to get dry then roll in paper of placed in a brown paper box or bag and sealed it, and label the container be careful not to use plastic containers for this. If the blood dried on the small object or any other material place that article on the brown box or the whole stained entity to the Laboratory for the verification. However, on the larger objects, cover up the stained part and clean it with the paper and seal the boundaries with the tape to stop loss or contagion. If unable to deliver the large object then scrape the stain on a clean paper piece which can easily, be folded and places in the envelope. Be careful not to rub the stain directly in to the envelope rather scrape these stains by using newly dried knife or other tool. However, it should be known that when recovering the bold from victim place never u se moistened cloth or paper.

Handgun and Shell Casings

A bullet trajectory kit may be needed to determine the source and trajectory of the bullets ...