CRIMINAL INVESTIGATIVE TACTICS

Criminal Investigative Tactics Used By Law Enforcement



Criminal Investigative Tactics Used By Law Enforcement

Criminal Investigation tactics by law enforcement officers Identification of a criminal who does not leave fingerprints or other conclusive evidence can be advanced by analysis of the methods of work, professional criminals tend to stick to a certain technology (for example, forcing the entrance) to find certain types of trophies, but to leave a certain brand (eg, through which the victim is connected). Criminal investigation departments to collect such data, as well as lists of stolen and lost property, and have free public access to such records, [http://www.fbi.gov/congress/congress04/lourdeau022404.htm] automobiles, and firearms and the registration of such private records as a laundry and dry-cleaners' marks, pawnshop and secondhand dealers Transactions and much more.

Information flows in a more or less continuously from police informants and undercover agents. Wiretapping and other electronic surveillance methods have become extremely important, while taking into account the legal constraints. The interrogation of suspects is one of the most important functions of a criminal investigation. In most countries, this procedure is delicate, since the recognition of human rights violations suspect may be rejected in court. The use of polygraph or lie detector, are also subject to extensive judicial restrictions.

Of the increase in aid in criminal investigation, crime lab equipped to deal with a wide range of physical evidence by chemical and other tests. (U.S. Department of Defense 2003) Methods of identification, including fingerprinting, and more recently voiceprinting and even "DNA fingerprint" (a method which is still experimental), came to prominence in modern investigation. Photo and photomicrography, document examination, ballistics and other scientific methods are also standard crime laboratory instruments. Forensic medicine may provide a blood and urine tests to detect traces of chemicals that could of murder victims.

Great controversy has turned on the application of this method to detect crime or to gather evidence for criminal prosecution. Opponents argue that the legitimate public interest to reduce the crime does not outweigh the great potential to infringe upon constitutional or fundamental guarantees of citizenship, such as privacy and freedom from unreasonable searches and seizures.

Telephone activity dates back to the beginnings of telegraph. In the United States, the state ban on the interception of communications, were adopted as early as 1862. Listening to telephone lines began in 1890 and was intended for use by police officers in the Supreme Court case of Olmstead v. United States (1928). (U.S. Department of Homeland Security 2007) Federal investigative authorities continue to engage in wiretapping, although in 1934 Congress has imposed restrictions that severely restrict the use of intercepted material as admissible evidence in court proceedings. In the 1960's and 70's to the Supreme Court sought to protect people from unreasonable searches and seizures "to limit the prosecution based on electronic surveillance. In some U.S. states prohibit the phone completely, while others allow its use in accordance with a valid court order. P adoption of the Crime Act of 1968 Congress authorized the use of electronic surveillance on a ...