Introduction to Crime scene Tech 801 By Nico Piatigorski Professor Antonini 11/29/2017

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Table of Contents Pages One & Two – What is crime scene investigation? What is the scientific method? Why is it important in Criminal Investigation? Pages Three & Four – What are the duties of the first responder to the crime scene? Discuss the importance of specialized personnel as they relate to specific duties at a crime scene. Pages Five & Six -. What is the importance of fingerprint, trace, blood and biological, and impression evidence at a crime scene? Pages Seven & Eight – What is the importance of comparing bullets and firearms evidence to a suspected weapon? Pages Nine & Ten – What is the difference between manner and cause of death? How should each death investigation be treated (as it relates to crime scene investigation processing) and why? Page Eleven – References

What is a crime scene investigation/ Scientific Method Crime scene investigation, otherwise known as (CSI) is the use of physical evidence at the scene of a crime and using deductive and inductive reasoning to gain ideas of events at the time of the crime scene. The scientific method is a procedure consisting of systematic observation, measurement, experiment, formulation, and testing of the hypothesis.

Why is it important in a criminal investigation? For instance, criminal investigation is an applied science, which involves studying of the facts, identifying, and locate the guilt of a suspect. The reason why it is important in a criminal investigation is because the collection of the observations and data. If you are considered a criminal investigator, it is important you gather and make obersvations.

Duties of a first responder at a crime scene. The duties of an officer or any other first responding agency is to prevent any changes and controlling changes at any crime scene. Mainly, the officer must make sure that he or she does not make or introduce any change at the crime scene. Making sure the officer and citizen safety are always in check. Officers must border of the areas of the crime scene, as it is most likely to contain some kind of evidence.

Importance of specialized personnel at a crime scene. The personnel, otherwise known as the “Crime scene Investigators” (CSI), are a importance at a crime scene because they are trained too recover evidence. They are very versatile in their areas of recognition, documenting, and recovering any types of physical evidence that has been left at crime scenes. They handle evidence more delicately then typical law enforcement.

Importance of fingerprint, trace, blood, and biological evidence at a crime scene. To start of, fingerprints are the best pieces of evidence to place an individual at a crime scene. The importance of fingerprint evidence is to match up fingerprints, palms, or even bare footprints to the suspect that was suspected at the crime scene. Blood evidence is more the likely the most accurate for matching an individual with a high probability. The importance of blood evidence is too make a high probable match to the most suspicious suspect, if they are making a high probable guess to the guilty individual.

Importance of fingerprint, trace, blood, and biological evidence at a crime scene. Biological evidence is important because the material can be a source of something simple as DNA, which would allow a person to be linked to a crime scene. DNA samples can be collected through blood, hair, saliva, tissue, skin cells, and even semen.

Importance of comparing bullets and firearms evidence to a suspected weapon. The importance of comparing bullets and firearms to suspected weapons is it can be positively matched back to a gun in the possession of a criminal suspect. Importance of collecting bullet casings and just the bullets by themselves is investigators will make models of the weapons that have the high probability of projecting these bullets. Sometimes, even one bullet can be traced back to the same lot number or serial number of the ammo that was found in the suspects possession.

Importance of comparing bullets and firearms evidence to a suspected weapon. Even something little as tool marks can be positively identified when in the suspects possession. Tool marks the location of the weapon or gun found at the crime scene. When handling tool marks, you must make sure you are wearing gloves, as you can accidently destroy the evidence.

The difference between manner and cause of death. The “ Manner of Death” is more then often determined by a medical examniner. The definition of “ cause of death” is it refers to injury that is initiated by the train of morbid events leading directly to death usually by an accident or by an act of violence.

How should each death in a investigation be treated and why. Each death in an investigation should be treated as it was a crime if it was not a natural cause of death. They usually hand these tasks of to “coroners”, who only take part in investigations when the death is suspicious, sudden, or if a medical doctor can not explain the cause of death.

References https://snohomishcountywa.gov/806/Cause-Manner-of-Death http://classroom.synonym.com/use-scientific-method-research- crime-4926481.html http://www.crime-scene-investigator.net/dutydescription.html https://www.criminaljusticedegreeschools.com/criminal-justice- careers/crime-scene-investigator/