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  2. Criminal investigation - Wikipedia

    en.wikipedia.org/wiki/Criminal_investigation

    Criminal investigation is an applied science that involves the study of facts that are then used to inform criminal trials. A complete criminal investigation can include searching, interviews, interrogations, evidence collection and preservation, and various methods of investigation. [1] Modern-day criminal investigations commonly employ many ...

  3. FBI Criminal Investigative Division - Wikipedia

    en.wikipedia.org/wiki/FBI_Criminal_Investigative...

    The Criminal Investigative Division (CID) is a division within the Criminal, Cyber, Response, and Services Branch of the Federal Bureau of Investigation.The CID is the primary component within the FBI responsible for overseeing FBI investigations of traditional crimes such as narcotics trafficking and violent crime.

  4. Defense Criminal Investigative Service - Wikipedia

    en.wikipedia.org/wiki/Defense_Criminal...

    The Defense Criminal Investigative Service (DCIS) is the criminal investigative arm of the U.S. Department of Defense Office of Inspector General.DCIS protects military personnel by investigating cases of fraud, bribery, and corruption; preventing the illegal transfer of sensitive defense technologies to proscribed nations and criminal elements; investigating companies that use defective ...

  5. State bureau of investigation - Wikipedia

    en.wikipedia.org/wiki/State_bureau_of_investigation

    A state bureau of investigation (SBI) is a state - level detective agency in the United States. They are plainclothes agencies which usually investigate criminal cases involving the state and/or multiple jurisdictions. They also typically provide technical support to local agencies in the form of laboratory and/or record services, or to ...

  6. Naval Criminal Investigative Service - Wikipedia

    en.wikipedia.org/wiki/Naval_Criminal...

    The United States Naval Criminal Investigative Service (NCIS) is the primary investigative law enforcement agency of the U.S. Department of the Navy.Its primary function is to investigate major criminal activities involving the Navy and Marine Corps, though its broad mandate includes national security, counterintelligence, counterterrorism, cyberwarfare, and the protection of U.S. naval assets ...

  7. Detective - Wikipedia

    en.wikipedia.org/wiki/Detective

    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. [1]

  8. Federal Bureau of Investigation - Wikipedia

    en.wikipedia.org/.../Federal_Bureau_of_Investigation

    The Federal Bureau of Investigation (FBI) is the domestic intelligence and security service of the United States and its principal federal law enforcement agency.An agency of the United States Department of Justice, the FBI is a member of the U.S. Intelligence Community and reports to both the Attorney General and the Director of National Intelligence. [3]

  9. Forensic science - Wikipedia

    en.wikipedia.org/wiki/Forensic_science

    Forensic science, also known as criminalistics, [ 1 ] is the application of science principles and methods to support legal decision-making in matters of criminal and civil law. During criminal investigation in particular, it is governed by the legal standards of admissible evidence and criminal procedure. It is a broad field utilizing numerous ...