Drugs can take the form of pills, powders, liquids, plant material such as leaves and mushrooms, crystalline materials (crystal methamphetamine), and cases such as MDMA or ecstasy, can be imbedded in paper or foods like candy.
How is evidence collected at a crime scene?
They take photographs and physical measurements of the scene, identify and collect forensic evidence, and maintain the proper chain of custody of that evidence. Crime scene investigators collect evidence such as fingerprints, footprints, tire tracks, blood and other body fluids, hairs, fibers and fire debris.
What equipment is used at a crime scene?
Every investigator’s tool kit will vary, but basics include disposable gloves, crime scene tape, a hand-held magnification glass, a flashlight, tweezers, a box of swabs, paper sacks and envelopes, measuring devices, orange evidence flags, adhesive lint roller and a portable source of infrared, laser or ultraviolet …
How should drugs found in a crime scene be collected and preserved?
Drugs that are seized should be counted and weighed. They must be placed in appropriate containers, which could include envelopes, paper bags, or sealed plastic containers depending on the sample being collected, in order to be properly preserved.
How do you package drugs from a crime scene?
- Wrapping & Packing: Place on waxed paper or cellophane. Pack in pill or powder box, paper container or druggist’s fold. …
- Identification: Label or tag on outside of container. Show type of material, date obtained, CSI or investigator’s initials, case name and number.
- Amount Desired: Standard – 1 oz. liquid. ¼ cup solid.
What are the 7 basic steps in crime scene investigation?
7 Steps of a Crime Scene Investigation
- Identify Scene Dimensions. Locate the focal point of the scene. …
- Establish Security. Tape around the perimeter. …
- Create a Plan & Communicate. Determine the type of crime that occurred. …
- Conduct Primary Survey. …
- Document and Process Scene. …
- Conduct Secondary Survey. …
- Record and Preserve Evidence.
What are the three types of evidence at a crime scene?
Evidence: Definition and Types
- Real evidence;
- Demonstrative evidence;
- Documentary evidence; and.
- Testimonial evidence.
What are the 3 tools of investigation?
Tools To establish facts and develop evidence, a criminal investigator must use these tools-information, interview, interrogation, and instrumentation. 3.
What is in a CSI kit?
Evidence collection containers (e.g., jars, paper bags, resealable plastic bags, metal paint style cans). … Evidence seals/tape. Extension cords. Fingerprint ink pad and pint cards for elimination prints.
What tools are needed for physical evidence?
What tools will you need to collect the physical evidence? Plastic bags, tweezers, q-tips, gloves, photographs, fingerprint dust, film for getting fingerprints, items to make a mold of a footprint.
What are the 5 types of physical evidence?
- Blood, semen, and saliva. These substances are subjected to serological and biochemical analysis for determination of identity and possible origin. …
- Documents. Any handwriting and typewriting examined for authenticity or source.
- Drugs. …
- Explosives. …
- Fingerprints. …
- Fibers. …
- Firearms and ammunition. …
What is physical evidence list some examples?
Examples of physical evidence include a document, a hair, fibers, fingerprints, soil, and blood. Class Characteristics are properties of physical evidence that can be associated only with a group and never with a single source.
What type of evidence are drugs?
Drug evidence may be in the form of plant material (such as marijuana, synthetic cannabinoids, salvia, and khat), solids (such as methamphetamine, powder cocaine, crack cocaine, and pharmaceutical or clandestine tablets), liquids (such as clandestine laboratory samples), or paraphernalia (such as smoking devices, …
What are the 5 steps of crime scene investigation?
INTERVIEW, EXAMINE, PHOTOGRAPH, SKETCH and PROCESS.
What are the four parts of a crime scene sketch?
What are the 4 parts to a crime scene sketch?
- Identify a problem.
- Predict a solution to the problem or an answer to the question.
- Design the experiment to be used to test your hypothesis.
- Carry out the experiment.
- Analyze the data and observations.
- State the conclusion.
- Summary paragraph.
What is the difference between primary and secondary crime scenes?
1. The primary crime scene is where a crime actually occurred. 2. A secondary crime scene is in some way related to the crime but is not where the actual crime took place.