Is a police officer required to warn a suspect in police custody of their Miranda rights?

Miranda requires officers to admonish suspects in police custody of certain rights, including the right to remain silent, to safeguard the Fifth Amendment's guarantee against self-incrimination. (See Miranda, supra, 384 U.S. at pp. 473-474 [suspect also must be advised of right to an attorney and that statements can be used against her in court].) These warnings are designed to "compensate for the coercive pressures inherent in a custodial interview." (Pilster, supra, 138 Cal.App.4th at p. 1405.) The prosecution may not use in its case-in-chief statements elicited during custodial interrogations unless

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preceded by a valid waiver of the defendant's Miranda rights. (People v. Mickey (1991) 54 Cal.3d 612, 647-648.)