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Key Facts
- Federal level: Miranda warnings generally are required when law enforcement subjects a person to custodial interrogation.
- Federal level: The warnings cover silence, possible use of statements, access to counsel, and appointed counsel for a person who cannot afford one.
- Federal level: An arrest without interrogation does not by itself trigger the warning rule, and noncustodial questioning generally does not trigger it.
- Federal level: A valid waiver must be knowing, intelligent, and voluntary under the governing circumstances.
Miranda rights are procedural safeguards for the Fifth Amendment privilege against compelled self-incrimination during custodial interrogation. The rule comes from the Supreme Court’s 1966 decision in Miranda v. Arizona.
Custody and interrogation must come together
The warning requirement ordinarily applies only when a person is both in custody and subjected to interrogation by law enforcement.
Custody is assessed objectively by examining the restraints and whether a reasonable person in that position would feel free to end the encounter.
Interrogation includes express questioning and conduct that officers should know is reasonably likely to elicit an incriminating response.
What the warning must communicate
The person must be told about the right to remain silent, that statements may be used as evidence, the right to have counsel present, and appointed counsel when the person cannot afford a lawyer.
No single ceremonial script is constitutionally required, but the words used must reasonably convey the substance of those protections.
Invocation and waiver are different
After receiving warnings, a person may knowingly, intelligently, and voluntarily waive the safeguards and answer questions.
An unambiguous request for counsel during custodial interrogation generally requires questioning to stop until counsel is present, subject to later Supreme Court rules about reinitiation and breaks in custody.
Merely remaining mostly silent does not necessarily invoke the right to silence; Supreme Court doctrine requires an invocation to be sufficiently clear.
What a Miranda violation affects
Miranda principally regulates whether statements from custodial interrogation may be used in the prosecution’s case, rather than creating an automatic release from custody or dismissal of charges.
Separate doctrines govern whether physical evidence, impeachment use, emergencies, or independently obtained evidence may be affected, so “no warning” does not answer every admissibility question.
