Trace Evidence

As we all know, there are a lot of clues in the crime scene. Evidently the body, body, clothes, and sometimes even the murder weapon. These are good ways to solve the incident, but there is another evidence; evidence of follow-up. Tracking evidence is a small fragment around the crime scene. There is evidence of many kinds of traces, some of which are metal shavings, plastic pieces, gun scratches, glass fragments, feathers, stains of food, building materials, lubricants, nail shavings, pollen and Spores, cosmetics, chemicals, paper fibers. Sawdust, human and animal hair, plants and plant fibers, blood and other body fluids, bitumen, tar, vegetables

Trace evidence trace evidence may include gun residue (GSR), paint residue, chemicals, glass, and illegal drugs. To gather evidence of traces, CSI may use tweezers, plastic containers with lid, filtered vacuum equipment and a knife. In addition, biohazard kits such as disposable latex gloves, boots, masks, robes, biohazard trash bags are also available. If the crime involves a gun, the lab collects clothes from the victim and someone on the scene, so the lab can test the GSR. While someone else's GSR can show suspects, the victim's GSR can indicate near-range shooting. CSI puts all the clothes in a sealed paper bag and brings it to the laboratory. If you find illegal drugs or unknown powders at the scene, he can collect them with a knife and then seal each sample in a separate sterile container. The laboratory can identify substances, determine their purity, and can examine other substances in samples in trace amounts.

A skilled trace evidence examiner can compare the evidence of all victims' traces in a series of murders to determine common evidence for all victims. These evidences reflect the "common environment" where all the victims are exposed. This common environment will occur repeatedly on objects in the world of crime, such as his car and residence. This can prove that all victims are in contact with criminals in the same place. Participants in a series of murder case workshops generally acknowledged that a series of murder cases had specific circumstances and concerns, especially when multiple jurisdictions were involved. In a continuous murder case, the crime scene may occur in different law enforcement jurisdictions, each jurisdictional jurisdiction may have different resources and capabilities to deal with crime scenes.