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Criminal procedure is the body of law that governs how suspected offenders are apprehended, charged, tried, and penalized. It outlines the methods for challenging convictions after a judgment is entered and addresses the balance of power between the state and its citizens.123

Key aspects include:

  • Investigation: Police, prosecutors, or magistrates gather evidence. Suspects also have the right to collect evidence in their favor.13
  • Prosecution: Prosecutors decide whether to file formal charges based on the evidence, with varying degrees of discretion depending on the legal system.2
  • Trial: The Sixth Amendment in the U.S. guarantees a speedy and public trial by an impartial jury, the right to be informed of charges, confront witnesses, and have legal counsel.4

Procedural law, including criminal procedure, ensures that substantive laws are effectively enforced through the courts.5

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