The defendant, Jason Martin, was convicted in the Fremont County District Court of possession of contraband, § 18-8-204.1, 8B C.R.S. (1986), and second degree assault, § 18 — 3—203(l)(f), 8B C.R.S. (1986). The Court of Appeals affirmed the conviction in
People v. Martin,
I
On September 24, 1982, while serving a sentence at the Shadow Mountain Correctional Facility for attempted first degree murder, the defendant became involved in an altercation with several security officers. An information was filed on January 21, 1983, in the Fremont County District *791 Court, charging the defendant with one count of possession of contraband and two counts of second degree assault. A detain-er was filed with the Department of Corrections on January 25, 1983, and the defendant formally requested disposition of the detainer under the Uniform Act on January 27. On February 10, the parties agreed to a trial date of May 2 and 3,1983.
For reasons not disclosed by the record, the superintendent of the facility where the defendant was confined did not send the defendant’s request for disposition of the detainer to the trial court or the district attorney until March 1. The trial court received the request on March 4.
Before commencement of the trial on May 2, the defendant moved to dismiss the charges against him on the ground that the superintendent failed to comply with provisions of the Uniform Act requiring prompt forwarding of his request for disposition of the detainer. The trial court denied the motion. During the trial, the defendant objected to the People’s request for admission into evidence of a mittimus containing information about his prior attempted first degree murder conviction. The trial court overruled the objection, and the defendant elected to testify. In affirming the convictions the Court of Appeals rejected the defendant’s arguments that both of these rulings were erroneous.
II
The Uniform Act ensures that a prisoner will not be subject indefinitely to adverse terms and conditions of imprisonment as a result of the filing of a detainer.
See People v. Higinbotham,
Any request [for final disposition of any untried indictment, information, or criminal complaint pending in this state] shall be delivered to the superintendent where the prisoner is confined who shall forthwith:
(a) Certify the term of commitment under which the prisoner is being held, the time already served on the sentence, the time remaining to be served, the good time earned, the time of parole eligibility of the prisoner, and any decisions of the state board of parole relating to the prisoner; and
(b) Send, by registered mail, a copy of the request made by the prisoner and a copy of the information certified under paragraph (a) of this subsection (1) to both the court having jurisdiction of the untried offense and to the prosecuting official charged with the duty of prosecuting the offense.
§ 16-14-103(1) (emphasis added). A superintendent’s failure to comply with these mandatory requirements may, in some circumstances, justify dismissal of the charges underlying the detainer.
People v. Higinbotham,
The Court of Appeals and the trial court determined that the defendant waived any objection he might have had to the superintendent’s failure to comply with the requirements of section 16-14-103 because no objection was asserted until the day of trial. We disagree with this analysis. Nothing in the statute or in our previous decisions indicates that a prisoner should automatically be deprived of the
*792
benefits of the Uniform Act merely because he silently relies on the statute’s provisions. Of course, a defendant may waive his speedy trial rights under the Uniform Act by freely acquiescing in a trial date beyond the ninety-day speedy trial period imposed by section 16-14-104.
1
People v. Sevigny,
A superintendent’s failure to fulfill the duties imposed by section 16-14-103 is itself a violation of the Uniform Act that is independent of any violation of the ninety-day provision of section 16-14-104.
See People v. Higinbotham,
Here, the defendant played no role in the asserted violation of the Uniform Act. There was no violation of section 16-14-104; the case was brought to trial within ninety days after the trial court’s receipt of the request for disposition. Furthermore, the defendant’s attorney was apparently unaware of the request until informed by the trial court on March 7. Thus, the defendant’s participation in scheduling the case for trial is irrelevant to the waiver issue presented here. Although the defendant might have prevented this violation of the “forthwith” requirement by informing the court of his request for disposition and asking whether it had been received, section 16-14-103 imposes no such obligation on the defendant.
See, e.g., People v. Diaz,
The state bears the burden of establishing that the prisoner’s request for final disposition was sent “forthwith” to the trial court and prosecutor.
People v. Bean,
A determination of whether the prison officials complied with the Uniform Act requirements must be made on an ad hoc basis, with full consideration of factors such as the length and reasons for the delay, the existence of prejudice to the defendant arising from the delay, the knowledge of the delay by prison officials, and their efforts to facilitate transmission of the request after the specific problems resulting in the delay were discovered.
In
People v. Higinbotham,
We find that analysis persuasive in this case. Dismissal is not required unless the evidence fails to establish that the defendant was not prejudiced, in view of the purposes of the Uniform Act, by the superintendent’s failure to send “forthwith” a copy of the defendant’s request for disposition to the trial court. The trial court found that there was no prejudice to the defendant in commencing the trial on May 2 — less than a week after the expiration of ninety days from the date the defendant made his request for disposition of the detainer. Because that finding is supported by the record, remand for a full determination of whether the requirements of section 16-14-103 were satisfied is unnecessary. Accordingly, the denial of the defendant’s motion to dismiss is affirmed.
Ill
With regard to the substantive charges underlying the detainer, the People were required to establish that the defendant was “lawfully confined or in custody” un.der the second degree assault statute, § 18-3-203(l)(f), 8B C.R.S. (1986), and that the defendant was “confined in a detention facility” under the possession of contraband in the first degree statute, § 18-8-204.1, 8B C.R.S. (1986). At trial, the People proffered for admission into evidence a mittimus showing that on the date of the altercation the defendant was confined as a result of a sentence imposed for an attempted first degree murder conviction. The mittimus was offered for the limited purpose of establishing that the defendant was lawfully confined in a detention facility. The defendant objected to the introduction of this item of evidence and indicated that he was willing to stipulate that he was lawfully confined. The trial court overruled the objection and instructed the jury with regard to the limited purpose for which the mittimus was introduced. The defendant then elected to testify at trial.
*794
Evidence of prior criminal acts is not admissible to demonstrate a defendant’s propensity to commit crimes or to commit certain types of crimes.
Stull v. People,
Although any relevant evidence is generally admissible, “evidence may be excluded if its probative value is substantially outweighed by the danger of unfair prejudice, confusion of the issues, or misleading the jury, or by considerations of undue delay, waste of time, or needless presentation of cumulative evidence.” CRE 403. In determining whether the probative value of proffered evidence is substantially outweighed by other considerations, the trial court should consider the logical force of the evidence and the proponent’s need for the evidence.
United States v. Grassi,
In a criminal proceeding, the government has a right to prove the elements of its case against a criminal defendant.
United States v. Brinklow,
Here, the element at issue was lawful confinement. The defendant’s offer to stipulate that he was lawfully confined removed any probative value from that part of the mittimus describing the defendant’s previous attempted first degree murder conviction. Had the defendant’s offer to stipulate been accepted, the prosecution would have had no need to introduce the mittimus. The remaining effect would be to arouse prejudice. 3 Because the nature *795 of the previous conviction was irrelevant, the offered stipulation carried probative weight identical to that of the mittimus.
Reference to the nature of the defendant’s prior conviction, where the nature of the conviction itself has no particular relevance, is particularly prejudicial.
Sanders v. State,
A stipulation that the defendant was lawfully confined is an appropriate method to avoid bringing before the jury the taint of the nature of a prior conviction.
See People v. Peterson,
A criminal conviction must be reversed if the error substantially influenced the verdict or affected the fairness of the trial proceedings.
Kotteakos v. United States,
The trial court properly instructed the jury that the mittimus was introduced for the limited purpose of establishing that the defendant was lawfully confined or in custody. It must be presumed that the jury followed the instruction.
People v. Smith,
Furthermore, the jury in this case found the defendant guilty on two counts of the indictment and was unable to reach a verdict on a third count. Although this fact does not conclusively resolve the harmless *796 error issue, it is an indication that the jurors exercised some discretion in their deliberations and did not blindly convict the defendant based upon inferences drawn from the nature of the previous conviction. Therefore, we conclude that in this case the error in admitting the mittimus was harmless.
IV
For the foregoing reasons, the decision of the Court of Appeals is affirmed.
Notes
. Section 16-14-104 provides as follows:
Trial or dismissal. Within ninety days after the receipt of the request by the court and the prosecuting official, or within such additional time as the court for good cause shown in open court may grant, the prisoner or his counsel being present, the indictment, information, or criminal complaint shall be brought to trial; but the parties may stipulate for a continuance or a continuance may be granted on notice to the prisoner’s attorney and opportunity to be heard. If, after such a request, the indictment, information, or criminal complaint is not brought to trial within that period, no court of this state shall any longer have jurisdiction thereof, nor shall the untried indictment, information, or criminal complaint be of any further force or effect, and the court shall dismiss it with prejudice.
. The trial court noted that the Uniform Act requires trial or dismissal of charges within 90 days of the receipt of the request by the trial court. Although the court did not receive the request for disposition of charges until 36 days after the defendant signed the request, trial was commenced 95 days after the request was signed. Recognizing that the defendant need not demonstrate prejudice, the court nevertheless implicitly found that the delay caused no prejudice. The court concluded that a six-day delay in forwarding the request would have met the "forthwith” requirement and that there would have been compliance with the Uniform Act’s speedy trial requirements if the superintendent had forwarded the request within six days of the defendant’s signing, i.e., trial was commenced within 95 days of the defendant’s request. The court stated, ”[t]he failure of the prison officials is what the defendant is complaining about; and if that had caused him any harm, if it were anything more than the simplest of omissions on their part, if it had any meaning whatsoever, it would have to be addressed.” The court apparently concluded that specific findings on the other factors were unnecessary because the defendant had not been prejudiced.
. The record here is not clear as to whether the defendant intended, by his stipulation, to prevent the jury from learning merely the nature of the previous conviction or the fact of a previous conviction. In light of the nature of the proof in this case, we assume that the defendant sought only to prevent the jury from learning the nature of the previous conviction. We note that in
United States v. Brinklow,
