What Is A Crime Scene Investigation Essay

The functions and responsibilities of constabulary officers as first respondents offense scene research workers as truth searchers are really of import. Actions taken at the beginning of an probe at a offense scene play a critical function in work outing a instance.

Careful and thorough probe is the key to guarantee that possible physical grounds is non tainted or destroyed or possible informants are non overlooked ( Reno, 2000 ) . An of import factor act uponing the ultimate legal significance of grounds is that research workers follow an aim, thorough, and thoughtful attack. The end of this procedure is to acknowledge and continue physical grounds that will give dependable information to assistance in the probe. Three chief constituents of an probe are: physical grounds, questioning and question ( Summerfield, 2005 ) . Cardinal words: Police officers, probes, possible grounds, physical grounds, offense scene, truth searchers, functions, responsibilities, Fourth Amendment Rights

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What Is A Crime Scene Investigation?

A offense scene probe is an scrutiny of the scene of a offense for any hints or grounds that may take constabulary to a suspect. One can believe of a offense scene as a piece of history. The offense scene has a narrative to state.

The grounds can recite the narrative with the right attack to look intoing the offense scene. Crime scene probe is a slow and hardworking procedure, but the methodological analysis that requires perfect attention besides tends to uncover of import hints to the method, motor and suspect of the offense. CSI research workers combine jurisprudence enforcement tactics with scientific cognition in their work, and the manner research workers do their occupations plays a large portion in whether or non the constabulary gaining control a suspect ( Vaux, 2011 ) . A offense scene is the get downing point of a successful or unsuccessful probe. The chief aims of a offense scene are to continue and roll up relevant information and any physical grounds that will do a connexion between all parties involved.

The first respondents dispatched to the scene of a offense are normally the lone people who get to see the offense scene instantly after the offense took topographic point, at its original province. The terminal consequence of the probe is to guarantee that justness is served ( Thomas, 2011 ) . Crime scene probe consists of analysing the scene of a specific offense in order to find what happened and supply hints as to the individuality of the suspect.

Several basic considerations come into drama when pull offing a offense scene efficaciously. They carefully and consistently examined a offense scene to larn how and when the offense was committed, who committed it and why, and possibly what points may hold been removed from the scene. Each probe of a offense scene is different. The differences depend on where the offense is committed, how large the offense is, and the country of the offense. A figure of processs take topographic point at a offense scene. While others depend upon the nature of the scene and the fortunes environing the offense, there are specific processs that are ever done. Crimes could be discovered by a informant who sees a offense in advancement and studies it to the constabulary, a victim of the offense reports it to the constabulary or the constabulary discover the offense in advancement. Police detecting the offense in advancement is besides known as a sting operation.

These are state of affairss where jurisprudence enforcement agents set up a scenario and felons are encouraged to perpetrate offenses ( Vaux, 2011 ) . Once the probe Officers has gathered all the information possible from a offense scene, they may let go of it. After release, people can travel back to utilizing the site as they usually would.

The site may necessitate specialised killing to take unsafe substances, along with the unsavoury reminders of a offense, such as the odor of a break uping organic structure or harm caused by a fire ( Smith, 2003 ) .

Functions and Duties of Police Officers as First Responders

The certified first respondent ( CFR ) profession was developed to turn to the slowdown between the clip an accident happens and the reaching of an exigency medical technician, such as a paramedic. Many certified first respondents are trained firemans, lifesavers, athletic trainers, constabulary officers or park Texas Rangers ( Thomas, 2011 ) . Police Officers as first respondents offense scene research workers and as truth searchers are the get downing point of a offense scene probe.

Important information is discovered and collected to assist work out the offense and seek the truth that surrounds the offense. The offense scene research worker at the scene foremost, gets an apprehension of what the probe will imply, and build a program of action for placement and assemblage grounds. Every offense scene is different ; nevertheless, the offense scene research worker has to do certain that all physical grounds is located and collected in a proper mode, record all pertinent information, secures the scene from taint, and goes over what he or she thinks took topographic point, and how and why it happened ( Siegel, 2009 ) . At a offense scene, the first responders other than looker-ons are normally police officers, exigency medical technicians and depending on the state of affairs, the fire section. The first respondents dispatched to the scene of the offense are normally the 1s who get to see the offense scene instantly after the offense foremost happened and at its original province. To acquire an accurate history and successful declaration in a condemnable probe, first respondents at a offense scene must keep the links that connect the suspect to the victim and the offense scene ( Thomas, 2011 ) .

Ensure Safety

The first responsibility of the constabulary officer as first respondents is to guarantee safety. As the first to get on the scene, they must do do certain that the victim or victims are safe, out of danger, and provided with the proper medical attention.

They besides have to do certain the paramedics reacting to the offense scene will handle the victim and take them to a nearby infirmary for intervention if necessary. Another of import responsibility is to divide the informant so that they can state their narratives without act uponing each other ( Cox, 2011 ) . It is a really of import responsibility for the constabulary officer to procure the offense scene country so that no unauthorised individuals can come in and interfere with the probe. Crime scene security margin steps has to be established by procuring the offense scene country every bit shortly as possible with barrier tape, police vehicles or other agencies to continue the grounds and do certain that offense scene does non acquire contaminated ( Thomas, 2011 ) .

Interview Victims and Witnesss

Interviewing is one of the responsibilities that give the look intoing Officer the chance to acquire grounds and testimony that will assist set up facts, place possible suspects and potentially provide documentation. Conduct a preliminary interview with looker-ons and the victim, if possible, to find if anyone can place the individual who committed the offense. At this clip the go toing officer will obtain a physical description of the suspect and inquire the victim to explicate what happened to the best of their ability. Interviewing is divided into two point of views, informant and victim. Both interviews have some common elements, but with differences based on on the single fortunes.

The interview should be conducted as near to the clip of the offense as possible. The informant should be able to state what happened without being interrupted. The victim should be interviewed with sensitiveness and on a professional degree ( Summerfield, 2005 ) .

Pull off the Area

An officer is assigned as the offense scene security officer. He will maintain a log of names of forces come ining and go forthing the offense scene. Anyone come ining the offense scene can pollute the grounds that could perchance associate the suspect to the offense scene, so accurate certification and grounds saving is indispensable ( Thomas, 2011 ) .

Grok the Suspect

While on responsibility, Police Officers will look for the individual who committed the offense at the scene and do an apprehension if the suspect is still in the locality of the offense. They want to guarantee that all responsible parties are held responsible for their actions. Suspects who are arrested for the offenses are normally booked into gaol or cited and release ( Hickey, 2003 ) .

Detain All Witnesses and Onlookers

Roll uping valuable information in the probe, by questioning people at the offense scene, is a responsibility that could assist in groking the suspect. Witnesss normally have of import information about the suspect and about what really happened.

Sometime the credibleness may be an issue in some instances with the information given ; but victims and suspects physical grounds in such a instance will be really utile in linking any losing nexus in the probe ( Thomas, 2011 ) .

Document the Scene

The reacting Officer should used methods which consist of written notes which will be used in building a concluding study, offense scene exposure, and a diagram or study. The end of the certification is to make a ocular record that will let forensics lab and the prosecuting lawyers to animate an accurate position of the scene. There should be a great consistence between each of these maps. Each method is of import in the procedure of decently documenting the offense scene. The notes and studies should be done in a chronological order and should non include sentiments, analysis, or decisions. Just the facts! The offense scene research worker should document merely what they see, non what they think.

The concluding study should state a descriptive narrative. A general description of the offense scene should be given merely as the research worker sees it when they do the initial walk through of the scene ( Byrd, 2000 ) .

Collect and Preserve Evidence

Once the offense scene has been exhaustively documented by the investigating Officer and the locations of the grounds noted, and so the aggregation procedure can get down. The aggregation procedure normally starts with the aggregation of the most delicate or most easy lost grounds. Particular consideration can besides be given to any grounds or objects which need to be moved. Collection can go on along the offense scene trail or in some other logical mode.

Photographs should besides go on to be taken if the research worker is uncovering beds of grounds which were non antecedently documented because they were hidden from sight ( Schiro, 2011 ) . Each type of grounds has a specific value in the probe. The value of grounds should be kept in consideration when making a offense scene probe.

It is besides wise to roll up more grounds at a offense scene than non to roll up adequate grounds. The most should be made at the offense scene, since an research worker has merely one shooting ( Schiro, 2011 ) . The grounds for the grounds aggregation is to form the grounds that the research worker recovered from the scene, where the points where recovered from, and what portion of the lab that the points were directed to ( Byrd, 2011 ) .

Report to the Leading Crime Scene Investigator

This peculiar responsibility call for all events that took topographic point, any accommodations or changes made to the offense scene and all motions in and out the offense scene margin will be documented. Lack of accurate information, skips, carelessness, under or overemphasis in information can badly damage the probe and the result for a successful decision. An accurate history of what happened, without any add-on or omission is really of import when pass oning with the taking research worker ( Thomas, 2011 ) .

The Fourth Amendment Rights

The Fourth Amendment plays a really of import function when it comes to single rights. The most of import word in the rating of The Fourth Amendment is the word warrant.

The Amendment provinces: & A ; acirc ; ˆ?The right of the people to be secure in their individuals, houses, documents, and effects, against unreasonable hunts and ictuss, shall non be violated, and no warrants shall publish, but upon likely cause, supported by curse or avowal, and peculiarly depicting the topographic point to be searched, and the individuals or things to be seized & amp ; acirc ; ˆA? , ( Scalia, 2007 ) . Harmonizing to the Fourth Amendment of the United States Constitution, the elements are the 1.Oath or Affirmation made 2. Probable cause determined 3. Specific warrant issued and 4.The existent Search, apprehension, ictus, and detention.

The order of these elements is of import! 1 and 2 should go on before 3, and 3 before 4. Properly conducted, a offense scene hunt can uncover grounds that allows research workers to retrace the offense and place the culprit. Legitimately conducted, a offense scene hunt can help in the successful prosecution of those responsible.

To legitimately carry on a offense scene hunt, nevertheless, research workers must be highly careful to follow the dictates of The Fourth Amendment ( Crawford, 1999 ) . Because officers under the intense emphasis and force per unit area of a offense scene may overlook the contents of The Fourth Amendment, jurisprudence enforcement bureaus should reenforce the demand for warrants through policy. The fact that a offense was committed on the scene by and large provides the needed likely cause for obtaining a hunt warrant.

Furthermore, forensic technicians and offense scene analysts can help in run intoing the specialness demand of The Fourth Amendment by providing a list of likely points of grounds to include on the warrant application. By developing policies that emphasize the demand for warrants, jurisprudence enforcement bureaus can well increase the likeliness of successful prosecutions ( Crawford, 1999 ) . Military officers can besides seek and prehend objects on a individual if the officer has placed the individual under apprehension. This exclusion extends to state of affairss in which the constabulary in good-faith erroneously arrest the incorrect suspect and prehend contraband during the hunt. If a suspect, either during traffic halt or otherwise, makes a sneak gesture, the gesture justifies a limited warrantless constabulary invasion ( Wheatly, 2007 ) . When Police Officer obtain a warrant before carry oning a hunt, the warrant must follow with the Fourth Amendment before grounds from the hunt will be admissible in tribunal. A warrant may be faulty if it is non supported by likely cause that is established by a elaborate, pledged statement made by a jurisprudence enforcement officer looking before a magistrate ( Fairlex, 2011 ) .


Police officers as first respondents require considerable cognition. They have a great duty when being the first individual on a offense scene. They have to do certain that the victims are safe and the suspect is apprehended, and that each of their Constitutional Rights are in topographic point. Processing a offense scene is a really drawn-out and thorough procedure. Research workers will pass hours, and sometimes yearss, documenting the offense scene and its status and roll uping all the physical grounds that is present in an effort to detect what offense was committed and who committed it.

All offense scenes, organic structures of grounds and fact-finding techniques are alone in their ain right. The Criminal Justice System wants to convict the guilty, while protecting the inexperienced person. As with any component of our society it is indispensable that we have in topographic point some system for formalizing decisions and premises to guarantee equity and justness are preserved.

Even our system of authorities has seen the wisdom in a system of cheques and balances to guarantee no individual force can rule without a consensus. Our jurisprudence enforcement fact-finding procedure should make no lupus erythematosus. By guaranting all elements of an probe are to the full explored and considered, this can be achieved ( McFadden, D. ) .


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