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A detective is an investigator, usually a member of a law enforcement agency. They often collect information to solve crimes by talking to witnesses and informants, collecting physical evidence, or searching records in databases. This leads them to arrest criminals and enable them to be convicted in court. A detective may work for the police or privately.
Informally, and primarily in fiction, a detective is a licensed or unlicensed person who solves crimes, including historical crimes, by examining and evaluating clues and personal records in order to uncover the identity and/or whereabouts of the criminal.
In some police departments, a detective position is achieved by passing a written test after a person completes the requirements for being a police officer. In many other police systems, detectives are college graduates who join directly from civilian life without first serving as uniformed officers. Some people[who?] 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.
The detective branch in most large 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, juvenile crime, fraud, narcotics, vice, criminal intelligence, aggravated assault/battery, sexual assault, computer crime, domestic violence, surveillance, and arson, among others.
In police departments of the United States, a regular detective typically holds the rank of "Detective". The rank structure of the officers who supervise them (who may or may not be detectives themselves) varies considerably by department. In Commonwealth police forces, detectives have equivalent ranks to uniformed officers but with the word "Detective" prepended to it (e.g. "Detective Constable").
In some countries[which?], courts and judicial processes have yet to recognize the practice of private detectives. In Portugal, presented proof loses significance when private detectives collect it.[clarification needed] Even under this circumstance, the practice is in demand and ruled by a code of conduct.
Before the 19th century, there were few municipal police departments, though the first had been created in Paris in 1667. As police activities moved from appointees helped by volunteers to professionals, the idea of dedicated detectives did not immediately arise. The first private detective agency was founded by Eugène François Vidocq in Paris in the early 1820s, who had also headed a police agency in addition to being a criminal himself. Police detective activities were pioneered in England by the Bow Street Runners and later the Metropolitan Police Service in Greater London. The first police detective unit in the United States was formed in 1846 in Boston.
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, drug distribution, 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 prosecuting counsel 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 attorney's office, such as entering for a lesser sentence in exchange for usable information. In some countries, 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. This is not permitted in England and Wales, where the interview of suspects and witnesses is governed by the Police and Criminal Evidence Act 1984.
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. Many major police stations in a city, county, or state, maintain their own forensic laboratories while others contract out the services.
Detectives may use public and private records to provide background information on a subject. Police detectives can search through files of fingerprint records. Police maintain records of people who have committed felonies and some misdemeanors. Detectives may search through records of criminal arrests and convictions, photographs or mug shots, of persons arrested, ands, hotel registration information, credit reports, answering machine messages, phone conversations, surveillance camera footage, and technology used for communication.
Across the world
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 to subsequent stages of the Initial Crime Investigators Development Programme in order to qualify as a Detective.
Before becoming a police detective, one must attend a law enforcement academy, providing the officer with a foundation of education with 16 to 24 college units[clarification needed] in criminal justice or administration of criminal justice. After graduation from the law enforcement academy, the officer undergoes job training with a field training officer for a period specified by the law enforcement agency and continues to work while on a probationary period, ranging from one to two years.
During the probationary period, the officer is assigned to look for evidence. During this time, the officer is supervised and mentored by a sergeant with years of experience. Some officers further their college education by attending a two- or four-year college or university, attaining a degree in criminal justice or administration of criminal justice. Colleges have options for a concentration or certificate in a specialized field of criminal investigation.
Through years of on-the-job training or college education, officers may participate in a competitive examination, testing their knowledge, skills and abilities regarding criminal investigation, criminal procedure, interview and interrogation, search and seizure, collection and preservation of evidence, investigative report writing, criminal law, court procedure and providing testimony in court. Competitive examinations are conducted by selected senior law enforcement officials. Following testing, a list of results is provided by the department. At the department's discretion, some or all of the officers on the list are promoted to the rank of detective. Some departments have classes of detectives which increase the detective's rank after successful experience.
Private investigators are licensed by the state in which they work (some states do not require licensing, but most do). In addition to the state examination, applicants testing for a private investigation license must also meet stringent requirements, which include college education, a range of two to four years of full-time investigation experience and the successful adjudication of a criminal and civil background check conducted by state investigators. Private investigators are licensed to conduct civil and criminal investigations in the state in which they are licensed, and are protected by statutes of that state. In states requiring licensure, statutes make it unlawful for any person to conduct a criminal investigation without a license, unless exempted by the statute (i.e., law enforcement officers or agents, attorneys, paralegals, claims adjusters).
- Hotel detective
- Investigator (disambiguation)
- Law enforcement agency
- Police rank
- Private investigator
- Special agent
- Detective fiction
- Bryce, Robert. "Detective (Bureaus) - NYPDS". New York Police Department. City of New York. Retrieved 25 January 2018.
Detective work is highly specialized, usually encompassing the examination and evaluation of evidence to apprehend suspects and to build solid cases against them.
- "Archived copy". Archived from the original on 2012-01-26. Retrieved 2012-02-04.CS1 maint: archived copy as title (link)
- "The First English Detectives - History Today". Retrieved 29 October 2016.
- "The incredible untold story of America's first police detectives - The Boston Globe". Retrieved 29 October 2016.
- "West Yorkshire Police - West Yorkshire Police".
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