Once the police have arrived at the scene, they first have to verify the problem. They have to record the time and the situation. They also need to be sure to record how they learned about the crime or who told them. They would also want to record the appearance of suspects. Then they would want to notify the dispatcher of the situation (http://www.rcmp-learning.org/copp/encopp/s_crime.htm).
Assemble a set of guidelines on conducting preliminary investigation for a criminal case. When there is a criminal case, are a set of guidelines a criminal investigator should follow when conducting a preliminary inquiry. These guidelines consist of arriving to a crime scene in a timely manner just in case the suspect may still be at or near the scene (Hess, K.M & Orthmann, C.H., 2013). They will need to take care of any injured person or people that may need emergency care. Check to see if there are any witness seen what had happen.
First responders play a crucial role in the establishment of a crime scene. Upon arriving at the scene, the first responders have checked for living victims and have rendered aid. It’s important to create a perimeter around the crime scene (this can be altered if additional evidence is found outside the initial crime scene). Only emergency personnel should enter and exit from the central entry point to control contamination, by creating an exit point; it helps avoid any excessive traffic through the crime scene. By secure the scene to ensure that no evidence is misplaced or damaged, or otherwise compromised.
This evidence is send to forensic laboratories to be examined and provide the investigator with information that may help solve the case. Later on this information can be used in court, for this reason it is critical that the investigator gather the evidence properly and legally. Most police investigations begin at the scene of a crime with the first responders to the crime scene usually police officers, fire department personnel or the emergency medical personnel. Their actions of the first responders to the crime scene can help the investigation or can severely damage it. The first responder has to secure the area, assist any victim if any, arrest the suspects if any, detain all witnesses, protect the crime scene and provide information about all the movements or alteration made to the crime scene investigators or their supervisor.
Once the scene is secured with an sufficient number of officers for the criminal investigators protection and unauthorized personnel are kept out of the crime scene, the crime scene investigator can begin working on the scene. Evidence is the next step that a crime scene investigator must take in the case. They are required to find proof for the case and attempt to locate evidence. They must connect the person responsible for the crime to the scene, and connect the suspects with the evidence. The next thing to be done by the criminal investigator is to begin working on the scene by photographing the scene from the outside working around the entire 360 degrees of the perimeter.
A Crime Scene Investigator must first approach the crime scene as if it is their only opportunity to protect and retrieve physical evidence. There are special technics and tools that crime scene investigators use to retrieve, preserve, and label all types of evidence (for lists of Crime Scene Equipment see Appendix A). The general protocol for crime scene investigation, processing, and analysis involves five basic steps: interview, examine, photograph, sketch and process (Berg, 2008). When looking at the crime scene it needs to be looked at with fresh eyes and without a prejudiced opinion of what happened, how it happened, or who might have done it. A conclusion may be based solely on the evidence and so an investigators integrity and judgment, gathering the evidence, maybe what stands between a conviction and a dis... ... middle of paper ... ... National Institute of Justice.
When the call comes in that a crime has been committed, the police are dispatched to the crime scene. When the police arrive on scene, they need to take control by apprehending any suspects and looking for witnesses/victims. If the scene is not safe, the first responders must secure the area. If anyone is hurt, they should call for medical personnel as soon as possible. The first police officer on scene is usually in charge until a criminal investigator arrives on scene.
Constructing a set of guidelines on managing the preliminary investigation for a criminal case is very important as it gives a baseline for officers to follow to help prevent errors in the investigation. According to Hess and Orthmann (2010), “The initial response is crucial to the success of an investigation. Although it is popularly believed that cases are won or lost in court, more cases actually are lost during the first hour of an investigation … than in court” (p. 14). After containing the incident, officers upon arrive will begin examining the scene by taking photographs, sketches or videos. After the scene has been recorded visually, officers will search for evidence, and then collect it for examination and processing while documenting what has been found during the search for clues.
Once the evidence is found, recorded and packaged, it must be sent to a crime lab for further processing. Each item when shipped should be recorded, logged and accounted for from person to person so when used in a trial, the evidence has been accounted for from beginning to end. The final thing investigators must make sure is that all evidence was seized properly and with probable cause. This is the main reason why in so many court cases evidence is thrown out, improper searches and seizures. If any investigator is in doubt on whether or not a place or person can be search, it is always best to obtain a warrant for that such reason.
It is very important that all evidence collected at a crime scene is done correctly. If the investigators make a one little mistake in the collection of evidence, the suspects defense team will try to make sure that mistake will be the cause of the evidence to be suppressed. With that said, investigators need to make sure all evidence collected is bagged and labeled in the right manner. This process starts once the first officer arrives at the scene. Once the first officer arrives at the scene he needs to follow these steps if he didn’t catch the suspect red-handed.