Crime Scene Investigation Test review

What does the first officer do after assess the crime scene, assisting the injured, detain the witness(es) and arrest the perpetrator?

Protect the scene and take notes

What needs to happen to evidence that isn’t compromised?

What is the difference between primary and secondary scene?

primary: original location

secondary: an alternate location

evidence that is collected and the scene AND what it does

• May prove that a crime was committed

• Gives the detectives leads to work within the case

• Link a suspect/victim with a crime scene

• Establish the identity of a victim/suspect

• Corroborate verbal witness testimony

• Exonerating the innocent

Where is the physical evidence obtained?

3 types of evidence

Testimonial:  oral or written statements

Physical:  any material items present at the scene, on the victim, or in a suspect’s possession

Trace:  physical evidence that is found in small but measurable amounts

the CAD program

The computer-aided drafting program is used to create finished sketch

What must an evidence collector do to avoid contamination?

Videotapes of a crime scene must include what?

narrator, be objective, record from different perspectives, and body-worn cameras

detain physical evidence

What does rough sketches include/ not include?

• Date, time, and location

• Scale

• Recovered items

• Important features

• Accurate distance measurements of objects

• A legend for description of items

• A compass designating North

• Names of investigators, victims, and suspects

  Not include

Collection of evidence involves extreme care in______, _______, and_____ in each piece of evidence

Identifying, packaging, and labeling

when there is a body, what should the photographer do?

must show body’s position and location

Databases(what they do and acronym)

Automated Fingerprint Identification System (AFIS)- fingerprint identification used when you get a background check(goes into the system)

Integrated Automated Fingerprint Identification System (IAFIS)- same as AFIS, but they also have records(criminal) that go into the system

Combined DNA Index System (CODIS)- any DNA that is found at the crime scene goes into this system

Integrated Ballistics Identification System (IBIS)- identification of bullets

International Forensic Automotive Paint Data Query (PDQ)- where you can find any vehicle type, model, and year by the paint found on the body/crime scene

4 steps of crime scene protocol

Interview, examine, document and process

What is the purpose of crime scene research?

know what collecting possible carriers of trace evidence is

3 categories of attacks on labs

tampering, contamination, substitution

Calls from the public call the police to be outfitted with what?

Body cams

define physical evidence

Any object that can establish that a crime has been committed or link a crime and a victim/suspect