BRONSON, J.

On April 22, 1974, defendant was placed on two years' probation after pleading guilty in Wayne County Circuit Court to a charge of assault with intent to rob being armed. MCLA 750.89; MSA 28.284. Subsequently, pursuant to an order to show cause, defendant was returned to Wayne County Circuit Court in order to face a charge of probation violation. It was charged that defendant, on August 19, 1974, had entered a plea of guilty in Detroit Recorder's Court to another charge of assault with intent to rob being armed.

At the probation revocation hearing, defendant admitted that he had been convicted in Detroit Recorder's Court upon his plea of guilty of assault with intent to rob and further that he had received a sentence of from 5 to 15 years in prison. Based on these admissions by defendant, the trial court found that defendant had violated a term of his probation.

The trial judge stated that he was about to proceed to sentencing and asked whether defendant or his attorney had anything to say prior to the imposition of sentence. Defendant requested an opportunity to explain "what really happened" regarding the conviction in Recorder's Court and began to explain that his plea had been entered on the advice of counsel. The trial judge, however, refused to permit defendant to offer any further explanation of that conviction, saying that it didn't really matter in view of defendant's plea.

Defendant's probation was revoked and defendant was sentenced to a term of from 5 to 15 years, the sentence to run concurrently with the sentence imposed on defendant's Recorder's Court conviction. Defendant now appeals.

On appeal, defendant asserts that he was in effect denied his constitutionally guaranteed right to a probation violation hearing. Defendant asserts that he should have been permitted to attack the validity of his guilty plea conviction which formed the basis of the charge of probation violation and that he had a right to litigate the propriety of that conviction at his revocation hearing. We disagree with this much of defendant's argument.

Defendant relies primarily on the opinion of the United States Supreme Court in Gagnon v Scarpelli, 411 U.S. 778; 93 S Ct 1756; 36 L Ed 2d 656 (1973). In that case, the Supreme Court reviewed cases involving probation revocation where the probationers had been sentenced at the time of their convictions and the sentences suspended for the period of probation. It was held that the probationers were entitled to a hearing before their probations were revoked and they began serving the previously imposed sentences. In that case, as well as in the parole revocation case which it followed, the Court recognized that the decision to revoke probation or parole consisted of two analytically distinct components:

"`The first step in a revocation decision thus involves a wholly retrospective factual question: whether the parolee has in fact acted in violation of one or more conditions of his parole. Only if it is determined that the parolee did violate the condition does the second question arise: should the parolee be recommitted to prison or should other steps be taken to protect society and improve chances of rehabilitation?' Morrissey v Brewer, supra, [ 408 U.S. 471, 479-480; 92 S Ct 2593, 2599; 33 L Ed 2d 484, 493 (1972)]." Gagnon v Scarpelli, 411 US at 784; 93 S Ct at 1760-1761; 36 L Ed 2d at 663.

This defendant was charged with violating the statutory condition of his probation that he not violate any criminal law of the State of Michigan during the term of his probation. MCLA 771.3(1); MSA 28.1133(1). No error was made by the trial judge in determining that defendant had in fact violated this condition of his probation. Since defendant admitted pleading guilty on advice of counsel to another crime while on probation, the fact of the violation was established. Defendant had no right to collaterally attack the Recorder's Court conviction at his probation revocation hearing. The proper manner for defendant to attack that conviction would have been by direct appeal. See People v Archie Gillman, 71 Mich. App. 374; 248 N.W.2d 553 (1976) (BRENNAN, J., dissenting). As the Supreme Court noted in Morrissey:

"Obviously a parolee cannot relitigate issues determined against him in other forums, as in the situation presented when the revocation is based on conviction of another crime." Morrissey v Brewer, 408 US at 490; 92 S Ct at 2605; 33 L Ed 2d at 499.

Thus we affirm the trial court's conclusion that defendant had violated a condition of his probation.

As noted previously, however, finding that a violation has occurred is only the first step in a revocation decision. Upon such a determination being made, it remains to be decided whether the probationer may nevertheless be permitted to retain his conditional liberty or whether he should be sentenced to a prison term. As to this latter question, the United States Supreme Court held:

"The parolee must have an opportunity to be heard and to show, if he can, that he did not violate the conditions, or, if he did, that circumstances in mitigation suggest that the violation does not warrant revocation." Morrissey v Brewer, 408 US at 488; 92 S Ct at 2603; 33 L Ed 2d at 498. (Emphasis added.)

A similar right for probationers to present circumstances in mitigation was subsequently recognized in Gagnon, 411 US at 782, 787; 93 S Ct at 1760, 1762; 36 L Ed 2d at 662, 664-665.

There is one difference between the procedure encountered in Gagnon and that used in this case. In Gagnon the probationers had been sentenced at the time of their convictions and the ultimate question presented at the probation revocation hearing was simply whether the probation should be revoked and the previously imposed sentence served. In this case, defendant was put on probation pursuant to the Michigan statutory procedure calling for a sentencing decision only after a probation violation. MCLA 771.4; MSA 28.1134. The ultimate decision did not consist merely of a choice between revoking and continuing the probation, but rather the same choices presented at sentencing after any criminal conviction. Defendant could again have been placed on probation, People v Double, 57 Mich. App. 633; 226 N.W.2d 594 (1975), or sentenced to a prison term of any length up to the maximum penalty for the offense of which he had originally been convicted and placed on probation. People v Jaynes, 23 Mich. App. 360; 178 N.W.2d 558 (1970).

In Michigan, even an expressed decision to "revoke probation", made prior to the sentencing decision, has been held to be merely provisional. People v Elbert, 21 Mich. App. 677, 681; 176 N.W.2d 467 (1970). There the Court said:

"We say this because a decision to revoke probation is tantamount to a resolve to jail the defendant in the state penitentiary; there is no middle ground — either a defendant is on probation or in jail."

Because of this procedural difference, we read Gagnon and Morrissey as requiring only that defendant have an opportunity to present circumstances in mitigation prior to the trial judge's decision to revoke his conditional liberty by imposing a prison sentence.

This right of a probationer to present circumstances in mitigation is implemented under the Michigan procedure by GCR 1963, 785.8(2), which provides as follows:

"Before sentence is imposed the court shall * * * give defendant and his lawyer a reasonable opportunity to advise the court of any circumstances they believe the court should consider in imposing sentence."

See, also, People v Hardenbrook, 68 Mich. App. 640, 646; 243 N.W.2d 705 (1976), holding that explanations by a probationer as to why he had violated a term of his probation would be best made at sentencing.

In this case, after the trial judge stated that he was about to proceed to sentencing, the defendant attempted to explain something about his guilty plea conviction which may have consisted of circumstances in mitigation relevant to the trial judge's decision to revoke his probation and impose a prison sentence. We can only consider the trial court's refusal to permit defendant to explain the circumstances surrounding his Recorder's Court conviction as a denial to defendant of his right of allocution guaranteed by the cited court rule. Defendant is entitled to resentencing.

We affirm the finding of a probation violation. We vacate defendant's sentence and remand to the circuit court for resentencing. We retain no further jurisdiction.