OPINION
RABINOWITZ, Chief Justice.The principal question in this appeal concerns the right of petitioner James Koehler to be present at all stages of a criminal proceeding. Since the factual context out of which the petition arises is of considerable significance, we deem it appropriate to detail the controlling facts.
Koehler was indicted on separate counts of assault with a dangerous weapon and assault with intent to commit rape. After five days of trial, the case was submitted to the jury for deliberation on Friday, June 16, 1972, at 11:45 a. m. Koehler and his counsel provided the bailiff with telephone numbers where they could be reached whenever the jurors returned. Since Koehler did not have a specific number where he could be reached after 4:30 p. m., he arranged to call his attorney at various times during the evening to inform him where he might be reached.
After breaking for lunch from 12 noon to 1:15 p. m., the jury deliberated until 4:30 p. m. At this time, in the presence of petitioner and both counsel, the court informed the jury they had two options if a verdict were not reached by 11 p. m.: they could continue deliberations that night and submit a sealed verdict, or they could terminate deliberations for the night and begin again in the morning after sleeping .at court-provided accommodations.
After breaking for dinner from 6:15 p. m. to 7:30 p. m., the jury deliberated until 9 p. m. At this time, the jury foreman gave the following note to the bailiff:
We feel we are deadlocked at this time with no hope of reaching a unanimous decision in the future. We await further instructions.
*444The bailiff testified that from 9 p. m. to 10:30 p. m. he dialed the telephone numbers appearing on the bailiff’s report which were listed for Koehler and his counsel, but could locate neither. The court then decided to communicate with the jury in the absence of both Koehler and his counsel. The following dialogue ensued:
THE COURT: I received your message. For the record the defendant is not here and we can’t locate him or his attorney, but your message indicates, and I’m reading it for the record, we feel we are deadlocked at this time with no hope of reaching an unanimous verdict — decision in the future, signed by yourself; you await further instructions. Is this correct ?
MR. SCATES: [Foreman]: Yes, sir.
THE COURT: And you feel that there’s no hope in your continuing to deliberate ?
MR. SCATES: Your Honor, we’ve taken several both hand votes and secret ballots and it has come out virtually the same from the time that we started.
THE COURT: I don’t want to know how you’re doing as far as the vote is concerned, but as I stated in my instructions I don’t want to have you compromise your convictions. If you can’t amongst yourselves decide, and this happens occasionally, I can’t discharge you because the defendant and the attorney are not here, but I’ll have you go home and come back Monday and for all intent and purposes you are hung and that’s about it.
MR. SCATES: Yes, sir.
THE COURT: And I guess I’ll have to accept that. Mr. Vochoska, you see nothing else, do you? We’ve tried and the bailiff has tried and we can’t get the defendant and the attorney and no use having to wait any longer so we’ll go ahead, you’re excused, as far as I’m concerned at this time the verdict — your verdict is a hung verdict; there’s no decision and we’ll have to announce it in open court with the defendant here Monday morning. So will you appear Monday morning at 9:30 please? I realize that it’s an inconvenience, but I would appreciate it and I do want to tell you that I think you’ve had a very difficult case to try. It was difficult for me and it was difficult for you and for many reasons which I prefer not to go into, but I’m sure that you felt the same thing and I want to thank you for your indulgence in it. Very well, we’ll excuse you then and see you Monday morning at 9 :30 and thank you again.
On Monday, June 19, in the presence of Koehler and counsel for both parties, the court verified, with the foreman, the events of the evening of June 16, accepted the hung jury disposition and formally discharged the jury. Koehler’s counsel then offered to establish by the testimony of witnesses that on Friday night he had been at the number given to the bailiff, but the court rejected this offer as unnecessary.
After the case was set for retrial, Koeh-ler moved to dismiss the indictment on the ground that re-prosecution would unconstitutionally place him twice in jeopardy for the same offense because no “manifest necessity” justified the June 16 discharge of the jury.1 At the hearing on the motion, the uncontradicted testimony of Koehler’s counsel established that although he was available at the designated telephone number, the bailiff was unable to reach him because the bailiff’s report incorrectly listed the number. Whether the error was counsel’s or the bailiff’s, it was uncontroverted that the bailiff’s report listed the number as 333-9065 while the correct number was 333-9056. Counsel also corroborated *445Koehler’s testimony that Koehler had contacted him “2 or 3” times during the evening to inquire about the jury’s deliberations. At the close of the hearing, Judge Singleton, who had not presided at trial, denied the motion to dismiss, reasoning that the discharge had been within the trial judge’s discretion under Criminal Rule 27.2 'His motion having been denied, Koehler brought this petition.3
Since petitioner argues that the jury was effectively discharged in his absence on June 16, we must at the outset analyze the trial court’s actions that evening. At the time of trial, Criminal Rule 27(e) provided that after the jury begins its deliberations
[t]hey shall be and remain under the charge of an officer until they agree upon their verdict or are discharged by the court. Unless otherwise ordered by the court, the officer having them under his charge must keep the jury together, separate from other persons. . . .4
If the court permits the jurors to be separated from one another, Criminal Rule 27(c) requires the court to admonish the jurors
not to converse with anyone on any subject connected with the trial, and that he is to discuss the case only with other jurors in the jury room.
Other than by consent of all parties, Criminal Rule 27(g) permits a discharge of the jury only (1) after they have agreed upon a verdict and given it in open court or (2) after the court determines “that there is no probability of an agreement being arrived at among the jurors necessary to return a verdict.” •
Our study of the record has led us to the conclusion that on the evening of June 16 the superior court accepted the jury’s inability to agree upon a verdict and discharged them from further deliberative duties as to either count of the indictment.5
*446We next turn to the questions of whether Koehler had a right to be present during the in-court proceedings which were held on the evening of June 16, and if he did, what is the effect of the trial court’s proceeding in his absence. Both the Sixth Amendment to the Federal Constitution and Article I, Section 11, of Alaska’s Constitution provide that the accused shall have the right “to be confronted with the witnesses against him.” In the implementation of this right, Criminal Rule 38 at the time of trial provided in part:
The defendant shall be present at the arraignment, at every stage of the trial including the impaneling of the jury and the return of the verdict, and at the imposition of sentence, except as otherwise provided by these rules .... In prosecutions for any offense, the defendant’s voluntary absence after the trial has been commenced in his presence shall not prevent continuing the trial to and including the return of the verdict.6
We think it clear, and so hold, that under Criminal Rule 38 Koehler’s presence was required at the June 16 proceedings when the trial court discharged the jury because of their inability to agree on a verdict. The events of that evening constituted a “stage of the trial” within the meaning of the rule, and the record therefore indicates that Koehler was deprived of his right to be present.
Our conclusion that Koehler had a right to be present at the June 16 proceedigs requires us to further determine whether denial of this right constituted prejudicial error7 Koehler emphasizes a line of cases holding that the personal presence of the accused and his counsel is a necessary pre-requisite to a valid discharge of the jury because of their inability to agree on a verdict.8 This is the majority rule,9 although there is contrary authority.10 The majority of courts recognized that the trial judge, alone, has discretion to discharge the jury when he thinks there is “no probability of an agreement being arrived at among the jurors necessary to return a verdict.” Criminal Rule 27(g) (2). On the other hand, the courts concede that the constitutional and statutory rights of the accused to be present and represented by counsel at every stage of the trial — including the return of the verdict — are fundamental. And while the judge has discretion to discharge the jury for their inability to agree, the majority of courts reason that the accused and his counsel, by being present and participating in the discharge decision, may have a significant impact on the court’s exercise of its discretion. In Clemensen v. Municipal Court,11 a California appellate court noted that
[h]ad counsel been present as he had requested, he could have suggested the court make additional inquiries of the *447jury. A specific poll of the jury could have been requested. Counsel could have discussed with the court the possibility of further deliberation. Since petitioner was represented by private counsel, the additional legal expense incident to a retrial of an action that had already taken four days could have been brought to the attention of the court and such consideration might have induced the trial judge to permit further deliberation by the jury, (footnote omitted)
Inherent in the majority rule is the recognition that if the double jeopardy barrier does not exist to remedy a discharge of the jury in the defendant’s involuntary absence, then no remedy exists to inhibit such judicial action in the future and thus to protect his “valued right to have his trial completed by a particular tribunal.” 12
The majority rule requires that a court decide whether the involuntary absence of the defendant at the discharge stage of trial constitutes reversible or prejudicial error.13 We find that the discharge in the case at bar affected petitioner’s “substantial right” to have his trial completed by the particular tribunal impaneled against him. Moreover, his absence occurred when the judge and jury were engaged in open court in proceedings directly bearing upon the decisional processes of the jury.14
In Speidel v. State,15 in holding a defendant’s absence from a presentence conference to be reversible error, we said:
The denial of that right must be assumed to have been prejudicial, since we cannot say with any degree of certainty that the judge may not have been influenced to impose a lesser sentence had appellant been given the opportunity to be heard and participate in the discussion relating to sentencing.16 (footnote omitted)
This statement, is analogous to the rationale used to support the majority rule we have been discussing. In addition to the contribution his counsel could have made to the jury discharge decision as noted in the Clemensen case, Koehler argues that he would have requested that the ABA instruction regarding hung juries be given.17 *448We agree that had Koehler and his counsel been present at the time in question, the court could have been requested to make additional inquiries of the jury, to take a poll of the jurors as to the separate counts of the indictment, or to permit further deliberations under additional instructions.18 In our view, the trial court’s decision to act in the absence of both the accused and his counsel deprived Koehler of the important right to have his trial completed by that particular jury. In light of all these circumstances, we hold that Koehler’s substantial rights were affected, and that the error cannot be regarded as harmless.19
We are of the further view that the principle of double jeopardy bars retrial-of petitioner on both counts of the indictment in the case at bar. Under the Alaska and United States Constitutions, jeopardy attaches when a defendant is placed on trial before a court of competent jurisdiction and a jury sworn.20 If the court discharges the jury without a verdict being reached, the defendant cannot be retried unless he consented to the discharge or “manifest necessity” required it.
Jeopardy clearly attached in the instant case since at the time the mistrial was declared, the jury had been sworn and the trial had commenced. Moreover, the state does not argue that Koehler consented to the jury’s discharge. Thus, we must decide whether a “manifest necessity” existed sufficient to discharge the jury and to declare a mistrial under the particular circumstances of this case. It is well established that a “manifest necessity” must exist for all mistrials, including hung juries,21 before reprosecution is permissible under the Double Jeopardy Clause.22 In cases of potentially hung juries, the “manifest necessity” test under Criminal Rule 27 (g) (2) ordinarily becomes whether there is “no probability” that a unanimous verdict will be reached. This discretionary standard is generally recognized by most courts.23
As noted, one of the rules of criminal procedure violated in this case was the *449trial court’s discharging of the jury in the involuntary absence of Koehler and his counsel. Courts have recognized such absence as a factor in holding that the mistrial was not pursuant to a “manifest necessity.” 24
The ABA Project on Standards Relating To Trial By Jury recognizes that discharge of the jury is not permitted merely because jurors report they have not been able to agree. The ABA suggests that whether there exists a probability of agreement should be determined by (1) questioning the jurors as to their inability to agree without any attempt on the trial judge’s part to ascertain how the jurors stand on the question of innocence or guilt and (2) considering the length of the deliberations, the length of the trial, and the nature or complexity of the case.25 The approach of the ABA has some support in the courts.26 In exercising its discretion, the trial court need not make express findings pertaining to its decision to discharge the jury. However, the record must clearly support the trial court’s implicit finding of “no prospect of agreement.”
In the case at bar, the trial court failed to make any express inquiry of the individual juror’s ability to reach a verdict. Instead, while speaking to the foreman, the court merely noticed “4 or 5” other jurors shook their heads that they could not agree on a verdict. Nor did the trial court make any inquiry as to whether there existed a possibility of reaching a verdict on at least one of the two counts.
Moreover, while the foreman stated that the jury had taken several fruitless votes, this was the first time the jury had reported to the court their inability to reach a decision. Courts have held mistrials declared in such circumstances impermissible.27 While the court may have given a hung jury charge in its initial instruction, the case at bar presented an appropriate situation for employing the ABA auxiliary instruction recommended in Fields v. State.28
Finally, we might note that the jury had only been deliberating 6½ hours on a trial which involved two counts, lasted 5 days, and involved numerous witnesses, many of whom contradicted each other. While this deliberation period, alone, might not foreclose a mistrial, the ABA study reflects that juries often take more than 6½ hours to reach a verdict on a 5-day trial.29
In light of the particular circumstances of this record, we conclude that no “manifest necessity” existed for the discharge of the jury. We therefore conclude that the constitutional protection against double jeopardy precludes the retrial of petitioner in the case at bar. The trial court erred in denying the motion to dismiss the indictment.
Reversed.
FITZGERALD, J., not participating.ERWIN, J., dissenting.
. Alaska Const. art. I, § 9 provides:
No person shall be put in jeopardy twice for the same offense. No person shall be compelled in any criminal proceeding to be a witness against himself.
U.S.Const., amend. V, provides in part:
[N]or shall any person be subject for the same offense to be twice put in jeopardy of life or limb.
. Crim.R. 27 at the time of trial provided in part:
(g) Discharge of Jury Before Yerdict. Except as may be provided in these rules or as the interest of justice may require, the jury shall not be discharged after the cause is submitted to them until they have agreed upon a verdict and given it in open court, except:
(1) By the consent of all parties entered in the record.
(2) At the expiration of such period as the court deems proper if it appears that there is no probability of an agreement being arrived at among the jurors necessary to return a verdict.
(h) Discharge Without Yerdict — Retrial. In all cases where the jury is discharged without having given a verdict, or is prevented from giving a verdict by reason of accident or other cause during the progress of the trial, or after the cause is submitted to them, the action may be again tried immediately, or at a future time, as the court directs.
. We have determined that petitioner’s application meets the requirements of Appellate Rules 23 and 24, and therefore have granted review. Bee Muller v. State, 478 P.2d 822, 824 (Alaska 1971).
. The majority of federal courts permit juries to separate even after they begin deliberations; a minority of federal courts and several state courts hold such action to be reversible error. See, e. g., United States v. Breland, 376 E.2d 721 (2d Cir. 1967) ; Hines v. United States, 365 F.2d 649 (10th Cir.1966) ; United States v. D’Antonio, 342 F.2d 667 (7th Cir. 1965) ; Commonwealth v. Della Porta, 324 Mass. 193, 85 N.E.2d 248 (1949) ; Commonwealth v. Gockley, 411 Pa. 437, 192 A.2d 693 (1963).
.We think the following portions of the record are determinative:
I’ll have you go home and come back Monday and for all intent and purposes you are hung and that’s about it. And I guess I’ll have to accept that. . . . [Yjou’re excused, as far as I’m concerned at this time . . . your verdict is a hung verdict; there’s no decision and we’ll have to announce it in open court with the defendant here Monday morning.
Also reflective of a discharge is the trial court’s failure to admonish the jury upon their June 16 dispersal, as required by Crim. R. 27(c) in cases of jury separation. We further note that the court’s comments on its inability to locate the petitioner and his counsel would probably have precluded the jury’s further consideration of the case, since that remark might have been understood • as a reflection on petitioner’s consciousness of guilt. See Wade v. United States, 142 U.S.App.D.C. 356, 441 F.2d 1046, 1050 (1971).
. We have concluded that there is no basis for holding that petitioner’s absence from the June 16 proceedings was “voluntary” so as to constitute a waiver of his right to be present under Crim.R.. 38. The record demonstrates that petitioner did not have knowledge that the June 16 evening proceedings were taking place. Thus, the record fails to disclose any intent on petitioner’s part to frústate the June 16 proceeding or to abscond.
Por a thorough discussion of the meaning of “voluntary absence,” as that term is employed in Crim.R. 38, see our opinion in Lee v. State, 509 P.2d 1088, 1090 (Alaska 1973).
. In Noffke v. State, 422 P.2d 102, 105 (Alaska 1967), we said:
We hold that nonadherence by the trial court to the provisions of Crim.R. 38 does not automatically constitute reversible error. A violation of the mandate of Crim.R. 38 is not prejudicial error unless such nonadherence has affected a substantial right of the defendant.
See Lee v. State, 509 P.2d 1088, 1093-1094 (Alaska 1973) ; Speidel v. State, 460 P.2d 77, 84 (Alaska 1969) ; Kugzruk v. State, 436 P.2d 962, 964 (Alaska 1968) ; Brown v. State, 372 P.2d 785, 789-790 (Alaska 1962).
. See, e. g., Clemensen v. Municipal Court, 18 Cal.App.3d 492, 96 Cal.Rptr. 126 (1971) ; State v. Chandler, 128 Or. 204, 274 P. 303 (1929) ; State v. Ulmo, 19 Wash.2d 663, 143 P.2d 862 (1943).
. See generally Annot., 150 A.L.R. 764 (1943) ; 1 Wharton, Criminal Law and Procedure § 141, at 329 (12th ed. 1957).
. See, e. g., State v. McCrary, 365 Mo. 799, 287 S.W.2d 785 (1956) ; State v. Farne, 190 S.C. 75, 1 S.E.2d 912 (1939).
. 18 Cal.App.3d 492, 96 Cal.Rptr. 126, 129 (1971).
. United States v. Jorn, 400 U.S. 470, 484, 91 S.Ct. 547, 557, 27 L.Ed.2d 543, 556 (1971), quoting from Wade v. Hunter, 336 U.S. 684, 689, 69 S.Ct. 834, 837, 93 L.Ed. 974, 978 (1949); State v. Ulmo, 19 Wash.2d 663, 143 P.2d 862 (1943); Clemensen v. Municipal Court, 18 Cal.App.3d 492, 96 Cal.Rptr. 126 (1971).
. We have previously discussed the requirement found in Crim.R. 38 that the defendant has the right to be present at every stage of the trial. Additionally, in the case at bar, we have held that the June 16 discharge proceedings constituted a stage of petitioner’s trial within the intendment of Crim.R. 38.
. Federal courts raise a rebuttable presumption of prejudice from the defendant’s absence during court communications with potentially hung juries. E. g., Wade v. United States, 142 U.S.App.D.C. 356, 441 F.2d 1046 (1971).
. 460 P.2d 77 (Alaska 1969).
. Id. at 84.
. In Fields v. State, 487 P.2d 831, 842-843 (Alaska 1971), w.e suggested
that when a trial judge is faced with an apparently deadlocked jury the recommended instruction be considered. This approach will yield uniformity and predictability, and should eliminate appeals based uj)on technical variations in language. For convenience and guidance, the recommended instruction is quoted:
The verdict must represent the considered judgment of each juror. In order to return a verdict, it is necessary that each juror agree thereto. Your verdict must be unanimous.
It is your duty, as jurors, to consult with one another and to deliberate witli a view to reaching an agreement, if you can do so without violence to individual judgment. Each of you must decide the case for yourself, but do so only after an impartial consideration of the evidence with your fellow jurors. In the course of your deliberations, do not hesitate to reexamine your own views and change your opinion if convinced it is erroneous. But do not surrender your honest conviction as to the weight or effect of evidence solely because of the opinion of your fellow jurors, or for the mere purpose of returning a verdict.
*448You are not partisans. You are judges —judges of the facts. Your sole interest is to ascertain the truth from the evidence in the case, (footnote omitted)
. We cannot accord controlling weight to the fact that the trial judge testified, at the hearing held on petitioner’s motion to dismiss the indictment, that he would have discharged the jury on June 16 regardless of any suggestions Koehler might have made.
. Davis v. State, 499 P.2d 1025 (Alaska 1972); Crim.R. 47(a).
Our dissenting colleague believes that Koehler was required to object to the Friday evening discharge of the jury when he was present in court the following Monday morning. The dissent concludes that this failure to object was a tactical decision which resulted in the waiver by Koehler of any possible constitutional objections to the discharge of the jury. In our view, such a conclusion disregards the circumstance that once the Friday evening discharge occurred Koehler and his counsel were powerless to rectify the procedural errors surrounding the discharge. When the jury reconvened on Monday, it was then too late for either Koehler or his counsel to cure any procedural infirmities by objection or by stipulation to continue the trial. As we have pointed out, in the absence of both Koehler and his counsel, the jury was permitted to separate without the required cautionary instruction from the court. The jurors were released from sequestration and allowed to return to their homes for the weekend after being informed they were discharged and that neither the defendant nor his counsel could be located.
. See Muller v. State, 478 P.2d 822, 825 (Alaska 1971); Lewis v. State, 452 P.2d 892, 893-894 (Alaska 1969); Selman v. State, 406 P.2d 181, 186 (Alaska 1965).
. Lewis v. State, 452 P.2d 892, 894 (Alaska 1969) ; citing Downum v. United States, 372 U.S. 734, 83 S.Ct. 1033, 10 L.Ed.2d 100 (1963); Logan v. United States, 144 U.S. 263, 12 S.Ct. 617, 36 L.Ed. 429 (1892); United States v. Perez, 22 U.S. (9 Wheat.) 579, 6 L.Ed. 165 (1824).
. This view is reflected in the United States Supreme Court’s most recent double jeopardy decision. Illinois v. Somerville, 410 U.S. 458, 93 S.Ct. 1066, 35 L.Ed.2d 425 (1973).
. E. g., Grogan v. United States, 394 F.2d 287, 289 (5th Cir. 1967), cert. denied, 393 U.S. 830, 89 S.Ct. 97, 21 L.Ed.2d 100 (1968); People v. Mays, 23 Ill.2d 520, 179 N.E.2d 654 (1962).
. Clemensen v. Municipal Court, 18 Cal.App.3d 492, 502, 96 Cal.Rptr. 126, 132 (1971); State v. Chandler, 128 Or. 204, 274 P. 303, 305 (1929).
. ABA Project on Standards Relating To Trial By Jury, 156 (1968) (hereafter ABA Study),
. Paulson v. Superior Court, 58 Cal.2d 1, 22 Cal.Rptr. 649, 372 P.2d 641 (1962) (questioning of jurors); People v. Mays, 23 Ill.2d 520, 179 N.E.2d 654 (1962) (nature or complexity of the case); Commonwealth v. Baker, 413 Pa. 105, 196 A.2d 382 (1964) (length of deliberations).
. E. g., Commonwealth v. Baker, 413 Pa. 105, 196 A.2d 382 (1964).
. 487 P.2d 831, 842-843 (Alaska 1971); see note 25 supra.
. ABA Study, supra note 25, at 156-57; H. Kalven & H. Zeisel, The American Jury 454-63 (1966).