opinion: Per Curiam.
  The question presented in this petition for certiorari is whether Miranda warnings are required if the suspect is not placed under arrest, voluntarily comes to the police station, and is allowed to leave unhindered by police after a brief interview. Because this question has already been settled clearly by past decisions of this Court, we reverse a decision of the California Court of Appeal holding that Miranda warnings are required in these circumstances.
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  The respondent, Jerry Beheler, and several acquaintances, attempted to steal a quantity of hashish from Peggy Dean, who was selling the drug in the parking lot of a liquor store. Dean was killed by Beheler’s companion and stepbrother, Danny Wilbanks, when she refused to relinquish her hashish. Shortly thereafter, Beheler called the police, who arrived almost immediately. See Brief in Opposition 3. He told the police that Wilbanks had killed the victim, and that other companions had hidden the gun in the Behelers’ backyard. Beheler gave consent to search the yard and the gun was found. Later that evening, Beheler voluntarily agreed to accompany police to the station house, although the police specifically told Beheler that he was not under arrest.
  At the station house, Beheler agreed to talk to police about the murder, although the police did not advise Beheler of the rights provided him under Miranda v. Arizona, 384 U. S. 436 (1966). The interview lasted less than 30 minutes. After being told that his statement would be evaluated by the District Attorney, Beheler was permitted to return to his home. Five days later, Beheler was arrested in connection with the Dean murder. After he was fully advised of his Miranda rights, he waived those rights and gave a second, taped confession during which he admitted that his earlier interview with the police had been given voluntarily. The trial court found that it was not necessary for police to advise Beheler of his Miranda rights prior to the first interview, and Beheler’s statements at both interviews were admitted into evidence.
  The California Court of Appeal reversed Beheler’s conviction for aiding and abetting first-degree murder, holding that the first interview with police constituted custodial interrogation, which activated the need for Miranda warnings. The court focused on the fact that the interview took place in the station house, that before the station house interview the police had already identified Beheler as a suspect in the case because Beheler had discussed the murder with police earlier, and that the interview was designed to produce incriminating responses. Although the indicia of arrest were not present, the balancing of the other factors led the court to conclude that the State “has not met its burden of establishing that [Beheler] was not in custody” during the first interview. App. to Pet. for Cert. 36.
  We held in Miranda that “[b]y custodial interrogation, we mean questioning initiated by law enforcement officers after a person has been taken into custody or otherwise deprived of his freedom of action in any significant way.” 384 U. S., at 444 (footnote omitted). It is beyond doubt that Beheler was neither taken into custody nor significantly deprived of his freedom of action. Indeed, Beheler’s freedom was not restricted in any way whatsoever.
  In Oregon v. Mathiason, 429 U. S. 492 (1977), which involved a factual context remarkably similar to the present case, we held that the suspect was not “in custody” within the meaning of Miranda. The police initiated contact with Mathiason, who agreed to come to the patrol office. There, the police conducted an interview after informing Mathiason that they suspected him of committing a burglary, and that the truthfulness of any statement that he made would be evaluated by the District Attorney or a judge. The officer also falsely informed Mathiason that his fingerprints were found at the scene of the crime. Mathiason then admitted to his participation in the burglary. The officer advised Mathiason of his Miranda rights, and took a taped confession, but released him pending the District Attorney’s decision to bring formal charges. The interview lasted for 30 minutes.
  In summarily reversing the Oregon Supreme Court decision that Mathiason was in custody for purposes of receiving Miranda protection, we stated: “Such a noncustodial situation is not converted to one in which Miranda applies simply because a reviewing court concludes that, even in the absence of any formal arrest or restraint on freedom of movement, the questioning took place in a ‘coercive environment.’” 429 U. S., at 495. The police are required to give Miranda warnings only “where there has been such a restriction on a person’s freedom as to render him ‘in custody.’” 429 U. S., at 495. Our holding relied on the very practical recognition that “[a]ny interview of one suspected of a crime by a police officer will have coercive aspects to it, simply by virtue of the fact that the police officer is part of a law enforcement system which may ultimately cause the suspect to be charged with a crime.” Ibid.
  The court below believed incorrectly that Mathiason could be distinguished from the present case because Mathiason was not questioned by police until some 25 days after the burglary. In the present case, Beheler was interviewed shortly after the crime was committed, had been drinking earlier in the day, and was emotionally distraught. See App. to Pet. for Cert. 24-25. In addition, the court observed that the police had a great deal more information about Beheler before their interview than did the police in Mathiason, and that Mathiason was a parolee who knew that “it was incumbent upon him to cooperate with police.” App. to Pet. for Cert. 25. Finally, the court noted that our decision in Mathiason did not preclude a consideration of the “totality of circumstances” in determining whether a suspect is “in custody.”
  Although the circumstances of each case must certainly influence a determination of whether a suspect is “in custody” for purposes of receiving Miranda protection, the ultimate inquiry is simply whether there is a “formal arrest or restraint on freedom of movement” of the degree associated with a formal arrest. Mathiason, supra, at 495. In the present case, the “totality of circumstances” on which the court focused primarily were that the interview took place in a station house, and that Beheler was a suspect because he had spoken to police earlier. But we have explicitly recognized that Miranda warnings are not required “simply because the questioning takes place in the station house, or because the questioned person is one whom the police suspect. ” 429 U. S., at 495. That the police knew more about Beheler before his interview than they did about Mathiason before his is irrelevant, see n. 2, supra, especially because it was Beheler himself who had initiated the earlier communication with police. Moreover, the length of time that elapsed between the commission of the crime and the police interview has no relevance to the inquiry.
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  Accordingly, the motion of respondent for leave to proceed informa pawperis and the petition for writ of certiorari are granted, the judgment of the California Court of Appeal is reversed, and the case is remanded for further proceedings not inconsistent with this opinion.
  It is so ordered.
  Beheler suggests that the decision below rested upon adequate and independent state grounds in that the court applied state “in custody” standards. See Brief in Opposition 9, n. 5. It is clear from the face of the opinion, however, that the opinion below rested exclusively on the court’s “decision on the Miranda issue.” App. to Pet. for Cert. 37. Although the court relied in part on People v. Herdan, 42 Cal. App. 3d 300, 116 Cal. Rptr. 641 (1974), that decision applies Miranda.
  Our holding in Mathiason reflected our earlier decision in Beckwith v. United States, 425 U. S. 341 (1976), in which we rejected the notion that the “in custody” requirement was satisfied merely because the police interviewed a person who was the “focus” of a criminal investigation. We made clear that “Miranda implicitly defined ‘focus’... as ‘questioning initiated by law enforcement officers after a person has been taken into custody or otherwise deprived of his freedom of action in any significant way.’ ” Id., at 347 (quoting Miranda, 384 U. S., at 444).
  Beheler offers a number of arguments in opposition to the State’s petition for certiorari. The thrust of these arguments is that even though he voluntarily engaged in the interview with police, his participation was “coerced” because he was unaware of the consequences of his participation. Beheler cites no authority to support his contention that his lack of awareness transformed the situation into a custodial one. In addition, Beheler argues that it would be unjust to uphold his conviction because the trigger-man was convicted only of voluntary manslaughter. We do not find Beheler’s argument to be persuasive. See Standefer v. United States, 447 U. S. 10 (1980).