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From Wikipedia, the free encyclopedia

Sherlock Holmes was a fictional detective of the late nineteenth and early twentieth centuries who first appeared in publication in 1887.

A detective is an investigator, either a member of a police agency or a private person. The latter may be known as private investigators (P.I.s or "Private I's", hence the play-on-words, "Private Eyes"). Informally, and primarily in fiction, a detective is any licensed or unlicensed person who solves crimes, including historical crimes, or looks into records.

Contents

Overview

In some American police departments, a detective position is often appointed, rather than a position achieved by passing a written test.[citation needed] Prospective British police detectives must have completed at least two years as a uniformed officer before applying to join the Criminal Investigation Department. UK Police must also pass the National Investigators' Examination in order to progress on to subsequent stages of the Initial Crime Investigators Development Programme in order to qualify as a Detective. [1]

In many other European police systems, detectives are university graduates who join directly from civilian life without first serving as uniformed officers.[citation needed] Some people argue that detectives do a completely different job and therefore require completely different training, qualifications, qualities and abilities than uniformed officers. The opposing argument is that without previous service as a uniformed patrol officer, a detective cannot have a great enough command of standard police procedures and problems and will find it difficult to work with uniformed colleagues.

Additionally, in some U.S. police departments, policies exist that limit the term that an officer may serve continuously as a detective, and mandate that detectives must regularly return to patrol duties for a minimum period of time. This is based upon a perception[citation needed] that the most important and essential police work is accomplished on patrol, and that the skills, experience and familiarity with their beats that patrol officers maintain are essential for detectives to maintain as well. Investigations, by contrast, often take weeks or months to complete, during which time detectives may spend much of their time away from the streets. In this thinking, rotating officers also promotes cross-training in a wider variety of skills, producing both better detectives and uniformed officers. Such policies also serve to prevent "cliques" within detective bureaus that can contribute to corruption or other unethical behavior.

Detectives obtain their position by competitive examination covering such subjects as principles, practices and procedures of investigation; interviewing and interrogation; criminal law and procedures; applicable law governing arrests, search and seizures, warrants and evidence; police department records and reports; principles, practices and objectives of courtroom testimony; and police department methods and procedures.[citation needed]

Private detectives in the U.S. are licensed by the state in which they live after passing a competitive examination and a criminal background check. Some states, such as Maryland, require a period of classroom training and must have experience with a weapon as well.[citation needed]

Organization

The detective branch in most larger police agencies is organized into several squads or departments, each of which specializes in investigation into a particular type of crime or a particular type of undercover operation, which may include: homicide; robbery; burglary; auto theft; organized crimes; missing persons; fraud; narcotics; vice; criminal intelligence; aggravated assault/battery; sexual assault; computer crime; domestic violence; surveillance; and arson, among others.

Techniques

Street work

Detectives have a wide variety of techniques available in conducting investigations. However, the majority of cases are solved by the interrogation of suspects and the interviewing of witnesses, which takes time. Besides interrogations, detectives may rely on a network of informants they have cultivated over the years. Informants often have connections with persons a detective would not be able to approach formally. Evidence collection and preservation can also help in identifying a potential suspect(s).

Criminal investigation: the investigation of criminal activity is conducted by the police. Criminal activity can relate to road use such as speeding, drunk driving, or to matters such as theft, assault, fraud, etc. When the Police have concluded their investigation a decision on whether to charge somebody with a criminal offense will often be made by the Director of Public Prosecutions (DPP) having considered the evidence produced by the Police.

In criminal investigations, once a detective has suspects in mind, the next step is to produce evidence that will stand up in a court of law. The best way is to obtain a confession from the suspect; usually, this is done by developing rapport and at times by seeking information in exchange for potential perks available through the District Attorney's Office, such as entering plea bargain for a lesser sentence in exchange for usable information. Detectives may lie, mislead and psychologically pressure a suspect into an admission or confession as long as they do this within procedural boundaries and without the threat of violence or promises outside their control. In the United States suspects may invoke their Fifth Amendment rights and refuse to answer any investigative questions until they consult with an attorney.

Forensic evidence

Physical forensic evidence in an investigation may provide leads to closing a case. Forensic science (often shortened to forensics) is the application of a broad spectrum of sciences to answer questions of interest to the legal system. This may be in relation to a crime or to a civil action.

The use of the term "forensics" in place of "forensic science" is (in a literal sense) incorrect; the term "forensic" is effectively a synonym for "legal" or "related to courts" (from Latin, it means "before the forum") and applies equally well to studies such as "forensics clubs" that practice formal debate. However, the single word is now so closely associated with the scientific field that many dictionaries include the meaning given here. Many major police departments in a city, county, or state, and the Federal Bureau of Investigation, maintain their own forensic laboratories.

Records investigation

Detectives may use public and private records to provide background information on a subject. Police detectives can search through files of fingerprint records. In the United States, the FBI maintains records of people who have committed felonies and some misdemeanors, all persons who have applied for a Federal security clearance, and all persons who have served in the U.S. armed forces. As well, detectives may search through records of criminal arrests and convictions, photographs or mug shots, of persons arrested, and motor vehicle records.

With a warrant, police detectives can also search through Credit card records and bank statements, hotel registration information, credit reports, Answer machine messages, and phone conversations. Search warrants are not needed if the detective can obtain a National Security Letter (NSL) from the FBI or other federal agency. These are generally issued without significant oversight or probable cause.[citation needed]

See also

References


Simple English

A detective is a person who solves crime, or investigates for the police or are hired by a person. A detective that is hired by a person is called a private investigator. Some famous fictional (not real) detectives are Sherlock Holmes and Inspector Clouseau.

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