What are the 8 steps of packaging evidence?

What are the 8 steps of packaging evidence?

Terms in this set (11)

• Obtain a search warrant.
• Secure and Isolate the crime scene.
• Record the scene.
• Conduct a systematic search for evidence.
• Collect and package physical evidence.
• Maintain and chain of custody.
• Obtain controls.
• Submit evidence to the laboratory.

How is hair packaged at a crime scene?

If possible, use the fingers or tweezers to pick up hair, place in paper bindles or coin envelopes which should then be folded and sealed in larger envelopes.

How is hair evidence transferred?

Human Hairs. As stated previously, physical contact may result in the transfer of hairs. These can transfer directly from the region of the body where they are growing—a primary transfer—or they can transfer from the clothing of individuals—a secondary transfer.

How do you package clothing evidence?

Evidence – Only pertinent items Preservation: Do not handle with bare hands Wrapping & Packing: Package each article individually with identification written on outside of package. Place in strong container. Use paper bags, never plastic. Miscellaneous: Leave clothing whole.

What is the first step to packaging trace evidence?

Trace Evidence Properly secure the evidence by placing in a paper bag or envelope. Close, seal, or tape the paper bag or envelope. The examiner must initial, date, and time across the sealed area. Label the bag or envelope with the patient’s identifying information.

How do you store hair evidence?

Comb the individual’s hair over clean white paper using a clean fine-tooth comb. Carefully fold the paper together with the comb into a bindle to prevent loss of any trace evidence. Place the bindle in an envelope and label with appropriate information.

What is the primary transfer of hair?

Hair transfer can be of two types–primary and secondary. Primary transfer occurs when- ever a person transfers his or her own hair to an object, place, or other person. This can occur either directly or by means of one or more intermediaries such as clothing.

When was hair analysis first used?

1855
The first use of forensic hair analysis occurred in 1855 during the murder trial of John Browning. Hairs on a rope found in the defendant’s home were visually compared to the victim’s hair and were judged to be identical in colour and length.

What kind of evidence is stored in an airtight container?

Charred debris recovered from the scene of a suspicious fir must be sealed in an airtight container to prevent the evaporation of volatile petroleum residues. Airtight containers can cause condensation of moisture within the container and result in bacteria that can destroy, alter or contaminate the blood.

What’s the best way to collect hair for evidence?

There are various ways to collect a sample of hair that can be used as evidence. An investigator can collect hairs they observe visually (with tweezers or by hand), and they can also use clear tape to lift non-visible hair from a variety of surfaces, such as clothing.

How is hair used in a criminal investigation?

In a criminal investigation, finding biological evidence such as hair proves helpful in establishing the scope of the crime scene, connecting a suspect to a weapon or the crime scene, supporting witness statements, or even connecting different crime scene areas.

When did they start to use hair as trace evidence?

Trace Evidence: Hair. In the years that followed researchers began to collect information about the structure of human and animal hair (Block, 1979). In 1899, several years after his original failure, in a case known as “L’affaire Gouffe” Francois Goron was able to establish that a murder victim’s hair had been dyed.

When is there likelihood of transfer of hair and fiber evidence?

When physical contact occurs between two individuals, objects, or individuals and objects, there is a likelihood of transfer of hair and fiber evidence. This likelihood is dependent on the nature of the contact, the duration of the contact, and the nature of the contacting surfaces.