Miranda warning

The Miranda warning is a warning given by police in the United States to criminal suspects in police custody (or in a custodial interrogation) before they are interrogated to preserve the admissibility of their statements against them in criminal proceedings.

The Miranda warning is part of a preventive criminal procedure rule that law enforcement is required to administer to protect an individual who is in custody and subject to direct questioning or its functional equivalent from a violation of his or her Fifth Amendment right against compelled self-incrimination. In Miranda v. Arizona, the Supreme Court held that the admission of an elicited incriminating statement by a suspect not informed of these rights violates the Fifth and the Sixth Amendment right to counsel. Thus, if law enforcement officials decline to offer a Miranda warning to an individual in their custody, they may interrogate that person and act upon the knowledge gained, but may not use that person's statements to incriminate him or her in a criminal trial.

In Berghuis v. Thompkins, the Court held that unless a suspect actually states that he is relying on this right, his subsequent voluntary statements can be used in court, and police can continue to interact with (or question) him.