The court of appeals did not amend Danh’s 65-month sentence. State v. Danh, 500 N.W.2d 506, 511 (Minn.App.1993).
I.
This court has never addressed the issue of a contingent plea agreement in which a defendant agrees to plead guilty in exchange for leniency for a third party. “Package deal” plea bargains are more common in jurisdictions that routinely subject co-defendants to joint trials than in Minnesota where joint trials of co-defendants are relatively rare. See Minn.R.Crim.P. 17.03 (1994). “Package deal” agreements are generally dangerous because of the risk of coercion; this is particularly so in cases involving related third parties, where there is a risk that a defendant, who would otherwise exercise his or her right to a jury trial, will plead guilty out of a sense of family loyalty.
In Bordenkircher v. Hayes, 434 U.S. 357, 364 n. 8, 98 S.Ct. 663, 668-69 n. 8, 54 L.Ed.2d 604 (1978), the U.S. Supreme Court stated that these types of agreements “might pose a greater danger of inducing a false guilty plea by skewing the assessment of the risks a defendant must consider.” Other states and federal circuit courts hold that “package deal” agreements are not per se invalid. E.g., In re Ibarra, 34 Cal.3d 277, 193 Cal.Rptr. 538, 666 P.2d 980, 986 (Cal.1983); United States v. Marquez, 909 F.2d 738, 741 (2nd Cir.1990); See also Bruce A. Green, “Package” Plea Bargaining and the Prosecutor’s Duty of Good Faith, 25 Crim.L.Bull. 507, 516-521 (1989). However, several courts hold that this type of plea is per se involuntary if the prosecutor did not have probable cause to charge the third party. See, e.g., In re Ibarra, 193 Cal.Rptr. at 545, 666 P.2d at 987; United States v. Nuckols, 606 F.2d 566, 569 (5th Cir.1979).
The Model Code of Pre-Arraignment Procedure, as adopted by the Council of the American Law Institute, contains no provision forbidding the offer of lenient treatment to a third party as an inducement to plead guilty. However, the Advisory Committee to the Code recommended forbidding such inducements. As stated in the Commentary:
The Reporter believes such inducements present a special risk that an innocent defendant will plead guilty and that a guilty defendant will receive treatment that does not meet his correctional needs and that he does not deserve in terms of his own character and dangerousness. Furthermore, allowing such offers may create a risk that a prosecutor who would otherwise be willing to offer greater leniency to the defendant avoids that issue by making the offer with respect to another person.
American Law Institute, Model Code of Pre-Arraignment Procedure, Commentary to § 350.3 at 615-16 (1975). Although there are no Minnesota cases which are on point, we have cautioned police officers against making a promise to free a relative in order to obtain a confession. State v. Anderson, 298 N.W.2d 63, 65 (Minn.1980).
Many courts which have addressed this issue note that the trial court must exercise special care to ascertain the voluntariness of such pleas. E.g., United States v. Tursi, 576 F.2d 396, 398 (1st Cir.1978). In practice, however, a thorough, but standard, Fed.R.Crim.P. Rule 11 inquiry will usually be sufficiently probing of voluntariness. See, Politte v. United States, 852 F.2d 924, 931 (7th Cir.1988); United States v. Usher, 703 F.2d 956, 958 (6th Cir.1983).
We are not prepared at this time to adopt a rule that “package deal” plea agreements are per se invalid. We believe, however, that such agreements are fraught with danger, and that the standard Minn. R.Crim.P. 15.01 inquiry cannot adequately discover coercion in these cases. We therefore hold that the state must fully inform the trial court of the details of these agreements at the time a defendant enters a “package deal” plea, and the trial court must then conduct further inquiries to determine whether the plea is voluntarily made.4 In
4
We agree with the First Circuit Court of Appeals that "a later hearing cannot replace a full inquiry into voluntariness at the time the plea is entered.” United States v. Daniels, 821 F.2d 76, 80 (1st Cir.1987). We also note that the Supreme Court has stated, "There is no adequate *543substitute for demonstrating in the record at the time the plea is entered the defendant’s understanding of the nature of the charge against him.” McCarthy v. United States, 394 U.S. 459, 470, 89 S.Ct. 1166, 1173, 22 L.Ed.2d 418 (1969) (emphasis in original). Because voluntariness is equal in importance to knowingness, it should also be apparent from the record at the time of the plea. See Boykin v. Alabama, 395 U.S. 238, 242, 89 S.Ct. 1709, 1711, 23 L.Ed.2d 274 (1969) ("It was error, plain on the face of the record, for the trial judge to accept petitioner's guilty plea without an affirmative showing that it was intelligent and voluntary”). Finally, this court, in State v. Casarez, 295 Minn. 534, 536, 203 N.W.2d 406, 408 (1973), similarly held that a guilty plea must appear on the record to have been voluntarily and intelligently made. In that case, we noted that the transcripts from the appellant’s guilty plea and sentencing hearings were so incomplete that we could not determine whether the appellant had "properly waived all of his rights.” We went on to note, "Nor is there anything in the record showing that the trial judge discussed the consequences of the plea so that defendant would have a full understanding of its consequences.”