How does a federal criminal investigation work?

A federal criminal investigation works differently than a state or local criminal investigation. In general, the Federal Bureau of Investigation (FBI), the Drug Enforcement Administration (DEA), the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF), and other federal agencies are responsible for investigating federal crimes. When a federal crime is suspected, the FBI or another agency will typically start the investigation by gathering evidence. This includes collecting documents, interviewing witnesses, or surveilling the suspect. The agency may also work with state and local law enforcement if the crime is also considered a state-level offense. When the FBI or other agency has enough evidence, they will file a complaint officially charging a person with a federal crime. This begins the prosecutorial phase. The defendant in a federal case has a right to a speedy and public trial. The evidence-gathering and court proceedings in a criminal investigation involve a number of laws and complex legal processes. In cases involving federal crimes, it is important to seek experienced legal counsel. Federal criminal investigations can take weeks, months, or even years to conclude, depending on the complexity of the investigation and the type of crime.

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How does a federal criminal investigation work?

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