Crime Scene Paper

To tie this reading into the lecture, we look at the different roles that are played by the same people in the two varying types of cases: cold cases and hot cases. One of the first facts put out there by Professor Dadio to differentiate between the two is that you don’t need a crime scene for a criminal investigation to take place. This seemed odd to me, because a criminal must have

Supporting Detail: DNA was a way they could prove that someone was there at the scene.

Method used: I used my latent fingerprint dusting powder in order to bring the print to a visible state to the naked eye and then I used my tape I had to gain a copy of the print off the handle. I then took the evidence to my forensic vehicle in order to keep it secure for further examination.

While entering the crime scene, the first responding officer should look out for any evidence which is present on the ground. There have some cases in which the first responding officer stepped on the evidence such as blood or

The first were from a dog collar on her body. The suspect had bought a few from the supplier, and the police department also found out that he often hunted in the area where the body was found. The twine used to tie the body bag were used for rabbit netting. The police department tracked down the supplier of the netting to a nearby city, who only produced a batch of it. The same netting was also found in the suspect’s house. The cable ties used to tie Tiernan’s hands together were tracked back to Royal Mail, a patent company of Parcel Force, who Taylor worked for. Finally, there were also pink carpet fibers found on Tiernan’s body, which was connected to Taylor’s home after the last three fibers were also tied back to his house. Hair and blood evidence were also used in the case, but they did not play as central of a role as the fiber

There are times when certain forms of evidence, such as blood and fingerprints, need to be obtained before the accused has time to destroy them (Inabau 2).

Thoroughly document scenes and gather potential evidences (physical, specimens, documents, photographs, statements etc) to send to crime lab

Bloodstain pattern analysis (BPA), known in the criminal justice field as blood splatter analysis, has been studied since the 1890s. Blood splatter, or bloodstain pattern constructional readings, is a technique that seeks to piece together the incident that caused an individual’s bleeding. Understanding blood splatter on a wall or various surfaces can be instrumental in formulating if a crime was committed and if the blood discovered at the crime scene can be used as evidence. The first documentation of blood splatter research occurred at the Institute for Forensic Medicine in Poland, by Dr. Eduard Piotrowski . During Dr. Piotrowski’s research and documentation period, where he used live bunnies to research blood splatter from head

In the United States, crimes are constantly being committed. Some of the crimes that are committed are simple, and other crimes are extremely complex. Every complex crime comes with its own challenges in distinguishing material evidence. Some evidence can be tiny as a hair, or a fiber that can be located on a piece of clothing or carpet. Even though, the size of the evidence is not important, the information that it provides investigators is crucial to finding the suspect of the crime. With the assistance of trace evidence, investigators can obtain the small particles that can transfer from two objects come together. Collecting material from any crime scene can yield a plethora of information. However, by properly collecting material evidence like the tire print impression, pubic hairs, multiple dog hairs, and foreign fibers. Investigators, were able to convict Cecil Sutherland for kidnapping, sexual assault, and three counts of murder.

Forensic science is a key aspect of Criminal Justice that helps rid the streets of lunatics and murderers. One of the most important fields of forensic science is blood spatter analysis. Under the Crime Scene Investigation, analysts gather the information that could eventually lead to a victim’s killer. Basic and complex information can be found when analyzing blood. We can learn what kind of weapon was used, the time of death of a victim and other important facts that can help a case. The pattern that the blood gives off give forensic scientists the tools that they need to help solve cases.

After the crime is first reported, the law enforcement officers must open an investigation. Within the investigation, witnesses must be interviewed separately by police, along with the victims, and suspects. Crime scene technicians should also be contacted to collect any type of evidence from DNA, fingerprints, and blood samples. After possible incriminating evidence is collected, it must be sent back to the lab for testing.

As such it incorporates a vast array of disciplines, such as biology and physics and further applies this knowledge to the realm of forensic science (Bevel, & Gardner, 2008). BPA can be directly accomplished through the analysis of physical evidence at the crime scene in conjunction with photography, and/or through the thorough examination of other classes of physical evidence, such as weaponry and clothing (James, Kish, & Sutton, 2005). The analysis of bloodstain patterns provide the investigators of an incident with an extensive assortment of information relative to reconstructing the crime scene (Karger, 2008). Information provided can extend from the positioning of the victim during the bloodshed, the movements of the perpetrator, the mechanisms to which produced the bloodstains, and so forth (James, Kish, & Sutton, 2005). Therefore, the application of BPA assists the investigator in answering what events had occurred and in what sequential manner, where the events occurred and where people were situated, and what did not occur (James, Kish, & Sutton,

Next thing they have to do is to secure the crime scene. Officers have to scan

The greater the time between the crime, documentation, collection, and examination of a crime scene, the harder it will be to reconstruct it due to changes constantly occurring. A crime scene is built on all available evidence, even what appears to be the absence of evidence. When lack of science, lack of research, or a poorly searched crime scene is the reason for a solid conclusion this can result in evidence not being

Most crimes include the transfer of bodily fluids or substances such as things like blood, skin, hair, mucus and semen. The police can use any of the substances found on or around the victim for DNA testing and other laboratory tests to match the elements to a particular suspect. Clothing fibers is another one that can be easily transferred from an offender to the victim during the crime. Police can match the fibres with those found in a victims clothes, homes, or cars.