OPINION
¶ 1 On Junе 20, 2002, a Pima County grand jury indicted appellee John William Jackson on seventy-eight counts of child molestation and sexual conduct with a minor under fifteen years of age, allegedly committed against his daughter R. between August 1989 and August 1992. On September 12, 2002, the trial court granted Jackson’s motion to dismiss the charges on the ground they were barred by the statute of limitation. The state contends the trial court abused its discretion by granting the motion. We agree and therefore reverse the dismissal order and remand the case for further proceedings.
BACKGROUND
¶ 2 We view the scant evidence presented at the hearing on Jackson’s motion in the light most favorable to upholding the trial court’s ruling.
See State v. Vera,
¶ 3 Three officers went to Jackson’s home. Officer Sueme interviewed R. privately and told her what her friend’s aunt had related to the police. R. immediately denied having made any such statements. Officer Sueme explicitly asked R. “if her dad ever had her touch any of his privates.” R. denied any such activity, although she did tell Sueme “several times” that “just once her Dad [had] showed her his ‘ding dong,’ ” but that it had been an accident. Jackson also denied any *58 wrongdoing. He told the officers R. wanted to live with her mother in California rather than with him.
¶4 While the officers were at the residence, a neighbor came over and told them R. had also told the neighbor’s daughter that Jaсkson was “messing” with R.R. again denied having made any such statements to her friends. She became upset when her friend’s mother demanded that the officers remove R. from the home and at the thought that her father might “go to jail.” R. also confirmed that she would prefer to live with her mother. Because R. denied “anything [was] happening” with her father and expressed a desire to remain at home, Sueme took no further action that day.
¶ 5 Two days later, Officer Sueme contacted Sergeant Spillman and asked him to review the ease. Citing pressure R. had received from friends and neighbors, Sueme told Spillman she thought it advisable for someone to talk to R. while she was at school and “away from outside influences.” Sueme stated in her report that Child Protective Services (CPS) needed to follow up by investigating the home, apparently because Jackson’s home was very dirty and he needed some suggestions about his hоusekeeping practices. She also stated that a Detective Thompson had eventually spoken to R., but the record contains no information confirming any such conversation actually occurred.
¶ 6 A police report prepared by Detective Olson in 2000 also was admitted into evidence at the hearing on the motion to dismiss. In his report, Olson stated he had received information from California law enforcement authorities that R. had reported to them that Jackson had molested her in 1994. Mistakenly noting that R. was “mentally slow,” Olson reported that he found she had made the same report in 1994 in Tucson “and that it had been investigated and closed as unfounded.” Olson contacted R.’s mother in California, told her of his findings, and then reported the ease was closed.
¶ 7 According to undisputed facts in Jackson’s motion to dismiss, in June 2002, Tucson police were told that Jackson’s son had reported having been molested by Jackson between 1994 and 1997. In response, Detective Rydzak interviewed R., who reported that her father had sexually abused her on a regular basis for several years. Rydzak and two other detectives also interviewed Jackson, who denied all allegations of sexual misconduct with his children. One day later, however, Jackson telephoned Detective Rydzak, admitted that he had lied to her the day before, and told her he had something to confess. Four days later, Jackson was interviewed by detectives and admitted having molested R. once or twice a week from 1989, when she was eight years old, through 1992. Jackson denied any sexual conduct with his son. He was subsequently indicted for the offenses against R.
V 8 At the hearing on the motion to dismiss, Detective Rydzak testified that, when she investigates a child sexual abuse case, she generally first interviews the alleged victim. If the child denies that any abuse occurred, she will interview the person suspected of abusing the child. If that person tells her nothing has occurred, she will typically close the investigation. Rydzak also testified that she had been trained in how to interview children in such cases and that she conducts forensic interviews, those intended to obtain information from a child without leading questions or suggestions about what might have occurred. A forensic interview is typically the only type of interview she conducts with children, and she said she reinterviews a child only if she obtains additional information, because repetitive interviewing can be very suggestive.
¶ 9 On cross-examination, Rydzak testified that, if she were assigned to a case and the investigating officer told her to go to a school and interview a child away from “outside influences,” she would do so. She also testified that she had checked whether there were any 1994 reports in the case other thаn Officer Sueme’s and that she had been unable to find any, raising the inference that neither Detective Thompson nor any other officer had interviewed R. at school.
DISCUSSION
I. Legal framework
¶ 10 The applicable statute of limitation on which the trial court based its ruling is *59 A.R.S. § 13-107(B). That statute provides that “prosecutions ... must be commenced within the following periods after actual discovery by the state ... or discovery by the state ... that should have occurred mth the exercise of reasonable diligence, whichever first occurs.” (Emphasis added.) In this case, the applicable period is seven years. § 13-107(B)(1). The statute also states that, “[f]or the purposes of subsection B of this section, a prosecution is commenced when an indictment, information or complaint is filed.” § 13-107(C). 3
¶ 11 In ruling on Jackson’s motion to dismiss, the trial court framed the issue as “whether the State exercised reasonable diligence in investigating the molestation allegation of [Jackson] made by [R.] in 1994.” Thus, the trial court did not find that § 13-107(B)’s “actual discovery” standard applies or was satisfied here. 4 Rather, the court granted the motion on three grounds: (1) the state’s lack of reasonable diligence in 1994 “to pursue the matter and to follow-up on significant leads,” for example, by failing to interview R. at school and complete a referral to CPS; (2) the state’s failure to exercise reasonable diligence in 2000 by investigating the report of the California authorities; and (3) the lack of evidence that Jackson had taken any affirmative steps to conceal his crimes.
II. Standard of review
¶ 12 “ ‘We review an order granting a motion to dismiss criminal charges for an abuse of discretion or for the application of an incorrect legal interpretation.’ ”
State v. Sanchez,
¶ 13 Interpretation of statutes is subject to our de novo review.
State v. Fell,
*60 III. Burden and standard of proof
¶ 14 We first note that neither § 13-107 nor Arizona case law specifically addresses the questions of whether the state or the defendant bears the burden of proof or what the standard of proof is when a limitation issue is raised. For example, under § 13-107(B)(1), must a defendant establish that the prosecution is time barred because the state either discovered or reasonably should have discovered the offense more than seven years before the charges were filed? Or, rather, does the state have the burden of essentially proving a negative — that it neither actually nor constructively discovered the offense outside the limitation period? And what is the appropriate standard of proof that should apply to the discovery issues under § 13-107(B)?
¶ 15 Generally, the state bears the ultimate burden of persuasion on a statute-of-limitation issue.
See
Paul H. Robinson,
Criminal Law Defenses
§ 202(a), at 464 (1984) (citing cases).
6
At oral argument, analogizing to motions relating to speedy trial rights, the state conceded that, if a defendant initially produces some reasonable evidence to support a statute-of-limitation argument, the burden of persuasion then shifts to the state to show the prosecution is not time barred.
Cf. Humble v. Superior Court,
¶ 16 The state argued, however, that the burden of persuasion had never shifted to it because Jackson failed to produce any reasonable evidence to support his statute-of-limitation contention. We disagree. Based on the time that elapsed between the initial allegations against Jackson in 1994 and the 2002 indictment, the 1994 police report, and the limited testimony below, we conclude that Jackson made a sufficient, prima facie showing on that issue to shift the burden to the state.
Cf. State v. Hyde,
¶ 17 The state also argued that its standard of proof on the limitation issue should be something less than beyond a reasonable doubt and suggested that failure to prove a timely prosecution does not necessarily divest a trial court of jurisdiction. In contrast, citing
State v. Willoughby,
¶ 18 In
Willoughby,
our supreme court announced that, “[i]n the very rare case in which jurisdiction is legitimately in issue because of contradicting jurisdictional facts, Arizona’s territorial jurisdiction must be established beyond a reasonable doubt by the jury.”
8
¶ 19 For several reasons, however, we disagree with Jackson’s contention that the state must prove beyond a reasonable doubt, at least at the pretrial stage, that a prosecution is not time barred. First,
Willoughby,
the only Arizona authority cited for his position, did not involve any statute-of-limitation issues and, therefore, did not address the standard-of-proof issue raised here. Second, the statute at issue in
Willoughby,
A.R.S. § 13-108(A), is clearly a jurisdiction statute (governing “[t]his statefs] ... jurisdiction оver an offense”), whereas § 13-107 relates only to time limitations and says nothing about jurisdiction. Third,
Willoughby
merely announced a rule that applies to “those rare cases ... where controverted jurisdictional facts cannot be resolved without reaching the merits of the case.”
¶20 We acknowledge the court’s statements in
Willoughby
that “jurisdictional facts must be established beyond a reasonable doubt in all cases in which jurisdictional facts are questioned,”
id.
at 538,
¶21 Perhaps most importantly, the territorial jurisdiction issue addressed in
Willoughby
related solely to the defendant’s contention “that Arizona lacked
subject matter jurisdiction
to try him for crimes committed in Mexico.”
¶22 In contrast, our supreme court has noted, albeit in dicta, that a “statute of limitations defense must be raised or it is waived.”
State v. King,
¶ 23 In short, although Arizonа cases have characterized a criminal statute of limitation as “jurisdictional,” 11 see ¶ 18 and n.9, supra, *63 it is distinctly different from the type of territorial jurisdiction addressed in Willoughby. In our view, therefore, Willoughby does not mandate that the state prove beyond a reasonable doubt that the prosecution was timely commenced under § 13-107(B).
¶24 Jackson’s argument for that higher standard also does not comport with the requisite standard of proof that applies to various other, pretrial criminal procedure matters. For example, under Rule 16.2(b), Ariz. R.Crim. P., 16A A.R.S., once a defendant has “establish[ed] a prima facie case that the evidence taken should be suppressed,” the state then has “the burden of proving, by a preponderance of the evidence, the lawfulness in all respects of the acquisition of all evidence” the state plans to use at trial.
See also State v. Jimenez,
¶25 Because a preponderance-of-the-evidence standard applies even to constitutional issues raised in pretrial motions to suppress evidence, we see no reason to impose on the state a higher standard of proof for pretrial motions to dismiss on limitation grounds, even if the latter are deemed “jurisdictional.”
Cf. People v. Frazer,
¶ 26 Accordingly, we hold that, once a defendant raises a limitation issue and, as here, presents some reasonable evidence to support it, the state bears the burden of establishing by a preponderance of the evidence that the prosecution is not time barred. We find persuasive the cases that have so held. 12 For purposes of § 13-107(B), the state must show that it timely commenced the prosecution within seven years of when it actually discovered or through the exercise of reasonable diligence should have discovеred the offense. Imposing that burden on the state is consistent with Arizona’s other, pretrial *64 criminal procedure rules, the view of most courts, and the rule requiring us to liberally construe criminal statutes of limitation in favor of defendants.
IV. Meaning and application of § 13-107(B)
¶27 We next turn to interpretation and application of § 13-107(B). Our attempt to determine and effect the legislature’s intent is hindered by some ambiguity in the statute. Under § 13 — 107(B)(1), the seven-year limitation period is triggered by the state’s actual or constructive “discovery.” But, unfortunately, the statute does not prescribe “what” must actually or constructively be discovered for the limitation clock to start ticking. Nor does the statute state the degree of certainty with which the discovery must be made. For example, does the limitation period begin when the state discovers or reasonably should have discovered that a suspect possibly committed an offense, or rather, that he or she probably or definitely did so?
¶ 28 Because the statute does not clearly address or answer those questions, we must look beyond its wording and consider other relevant factors in determining its meaning and application here. In granting Jackson’s motion to dismiss, the trial court correctly noted that ‘Arizona criminal statutes of limitations do not begin to run until the State actually discovers or should have discovered
that the offense
occurred.”
13
(Emphasis added.)
See Escobar-Mendez,
¶ 29 We find support for that conclusion in
State v. Wilson,
We are satisfied that the discovery rule here should include a probable cause element and a due or reasonable diligence requirement. We therefore hold that “discovery” for purposes of section 802.5 occurs when the authorities know or should know in the exercise of reasonable diligence that there is probable cause to believe a criminal fraud has been committed. The probable cause requirement fits well with the language of section 802.5, which requires “discovery of the offense.” The due or reasonable diligence requirement is in harmony with our civil discovery rule. It also promotes one of the purposes of a criminal statute of limitations: to discourage inefficient or dilatory law enforcement.
¶ 30 Finding that reasoning persuasive, we likewise adopt “a probable cause element” in *65 construing and applying § 13-107(B). Id. Therefore, the seven-year limitation period under that statute begins “when the authorities know or should know in the exercise of reasonable diligence that there is probable cause to believe a criminal [offense] has been committed.” Id.
¶31 Probable cause exists “when reasonably trustworthy information and circumstance would lead a person of reasonable caution to believe that a suspect has committed an offense.”
State v. Hoskins,
¶32 In addition, considering such factors as the statute’s spirit, purpose, consequences, and effects, we have no reason to believe the legislature intended to require the state to commence a prosecution before it possesses adequate information to legally initiate charges. In other words, the legislature presumably did not contemplate the limitation period beginning even before the state has actually or constructively discovered that an offense probably has been committed. 15
¶ 33 Jackson argues, however, that applying a probable-cause standard to the discovery issue under § 13-107(B) “would defeat the recognized purposes of the statute of limitations and effectively render it a nullity.” According to him, to designate the point at which the police have established “probable cause to believe a particular person committed an offense” as the triggering event that starts the limitation period “turns the statute on its head, as it removes the time that the police are actuаlly investigating the offense from the limitations period, contrary to the purposes of the statute.” Instead, Jackson argues, the limitation period should begin when police “have reasonable suspicion that a crime has occurred,” even if the identity of the perpetrator or suspect is unknown.
¶ 34 Jackson relies on several California cases to support that proposition. In
People v. Zamora,
*66
¶ 35 Subsequent California cases also cast doubt on whether the reasonable suspicion or “inquiry” standard mentioned in
Zamora
is actually applied in practice. For example, in
People v. Crossman,
¶ 36 Moreover, in
Commonwealth v. Hawkins,
¶ 37 Applying a probable-cause standard to § 13-107(B) will not necessarily produce the drastic, ill-advised consequences Jackson postulates. See ¶33, supra. Contrary to Jackson’s assumption, commencement of the limitation period will not depend on law enforcement officers actually establishing probable cause to arrest or charge a suspect. Rather, absent actual discovery, the limitation period will commence when the government, through the exercise of reasonable diligence, “should have” discovered probable cause to believe an offense has been committed, even though probable cause is only later actually established. § 13-107(B).
¶ 38 In addition, a probable-cause standard is not unworkable in practice, as Jackson apparently suggests. Once probable cause is established and charges have been filed, a defendant’s statute-of-limitаtion contention and its related discovery issues under § 13-107(B) can be viewed through the lens of all facts known at the later time. In other words, the facts ultimately discovered and used to support probable cause will be highly relevant in determining whether, with reasonable diligence, the state should have discovered such facts more than seven years before the prosecution commenced.
¶ 39 Adoption of a probable-cause standard also is consistent with Arizona’s statute-of-limitation jurisprudence in the civil context. Under the common law “discovery rule,” a cause of action accrues for purposes of A.R.S. § 12-542, and the limitation period then begins, when “the plaintiff knows or with reasonable diligence should know the facts underlying the cause.” Doe
v. Roe,
¶ 40 Regardless of the level or timing of R.’s awareness that Jackson had sexually abused her during the 1989-1992 time frame or beyond,
see Nolde,
¶41 Having concluded that § 13-107(B) implicitly requires the state to show by a preponderance of the evidence that reasonable diligence would not have led to discovery of the crime, we further conclude that the state’s failure to adequately investigate or otherwise exercise reasonable diligence, in and of itself, does not bar a prosecution.
16
Rather, the actual or constructive discovery addressed in § 13-107(B) must relate to facts that show that a particular offense probably was committed.
See Zamora,
V. Review of trial court’s ruling
¶ 42 In reviewing a trial court’s ruling, we will not disturb its factual findings unless they are clearly erroneous or unsupported by any reasonable evidence, but we review any legal conclusions de novo.
State v. O’Dell,
¶43 As noted above, the state bore the burden of proving by a preponderance of the evidence that it neither actually nor constructively discovered, more than seven years before the indictment against Jackson was *68 filed, that the offenses against R. probably had been committed. The scant record before us leaves open the question of whether the state met or can meet that burden. The record is devoid of any evidence that, had the police interviewed R. at school or reported the ease to CPS, 18 either Jackson or R. probably would have admitted that the sexual abuse had occurred. Indeed, R. waited until she was eighteen years old before she finally made the accusations against her father. Nor does the record reflect that, had the state exercised reasonable diligence during the 1994-2001 time frame, other evidence of the offenses would or should have been uncovered.
¶ 44 In sum, the record does not support a finding, even had the trial court made one, that the state should have discovered more than seven years before Jackson was indicted that he probably had committed the charged offenses.
19
See Lopez,
CONCLUSION
¶ 45 The trial court misapplied the law in granting the motion to dismiss the charges and, therefore, abused its discretion.
See Gorman; Fields.
Accordingly, we reverse that ruling and remand the ease for further proceedings. Obviously, however, when the parties litigated and the trial court ruled on Jackson’s motion to dismiss, they lacked the benefit of our analysis and conclusion. Under the circumstances, we deem it appropriate to remand the case for further proceedings consistent with the standards set forth in this opinion.
20
See United States v. Jor
*69
dan,
Notes
. Although apparently available, Officer Suеme did not testify at the hearing.
. According to Officer Sueme's report, J. is developmentally challenged. Although she was twelve years old in 1994, she reportedly had the mental age of a five or six year old.
. In 1997, the legislature amended A.R.S. § 13-107 by adding subsection (E), which states: "The period of limitation does not run for a serious offense as defined in [A.R.S.] § 13-604 during any time when the identity of the person who commits the offense or offenses is unknown.” 1997 Ariz. Sess. Laws, ch. 135, § 1. The state concedes that statutory change “does not impact” this case.
See Martin v. Superior Court,
. Although the state suggested otherwise at oral argument in this court, Jackson did argue below that "actual discovery” had occurred in 1994. He did not advance that theory in his answering brief. In his supplemental brief, however, Jackson contended, without elaboration, that the state had actually discovered his offenses in 1994. We disagree and therefore limit our analysis to the issue of constructive discovery, the basis on which the trial court ruled.
. In general, "a statute of limitations reflects a legislative judgment that, after a certain time, no quantum of evidence is sufficient to convict. And that judgment typically rests, in large part, upon evidentiary concerns — for example, concern that the passage of time has eroded memories or made witnesses or other evidence unavailable.”
Stogner v. California,
.
See also Bonel v. State,
.
See United States v. Owens,
. The parties neither briefed nor argued (below or on appeal) the issue of whether the trier of fact, rather than the trial court in a pretrial setting, should resolve statute-of-limitation issues when the facts bearing on such issues are conflicting. Therefore, we do not address or decide that point.
. This appears to be a minority view.
See, e.g., Cowan v. Superior Court,
. The American Law Institute's (ALI) Model Penal Code (MPC) treats jurisdiction and limitation issues as elements of an offense that must be proved beyond a reasonable doubt. MPC §§ 1.12(1), 1.13(9)(d), (e) (1985). But, just as the court in
State v. Willoughby,
. That characterization apparently emanated from
State v. Fogel,
.
See People v. Zamora,
. In his supplemental brief and at oral argument, Jackson conceded that the object of the actual or constructive discovery to which § 13— 107(B) refers is "the offense.” Under Arizona criminal law, an "offense," inter alia, "means conduct for which a sentence to a term of imprisonment or of a fine is provided by any law of the state.” A.R.S. § 13-105(23). And " ‘[c]onduct' means an act or omission and its accompanying culpable mental state." § 13-105(5).
. Citing California case law, Jackson contends § 13-107(B) only requires "discovery of an
offense,
and
not
discovery of the
offender.” See, e.g., People v. Crossman,
. Through statutory amendments or new enactments, many states have lengthened, created special commencement rules for, or made more flexible the limitation periods that specifically apply to charges of sexual misconduct committed against minors. See Robinson, supra n.7, § 202(a), at 99-101 n.l (2003-04 Supp.) (citing statutes); see also id. § 202(c), at 103 n.20.
. At oral argument, Jackson contended that, even if the police had exercised all due diligence by fully investigating the allegations against him in 1994 and finding no basis to file charges, this prosecution initiated in 2002 would still be untimely. In our view, neither § 13-107(B) nor common sense supports that argument.
. As for the failure of Tucson police to follow up in 2000, the state had seven years from that date to file charges. Its filing in 2002 was well within that time period.
. No evidence established whether Tucson police routinely sought CPS intervention whenever child sexual abuse was alleged or whether the police in 1994 had wanted CPS follow-up for anything other than Jackson’s dirty house and need for housekeeping advice.
. In the police report, Officer Sueme checked "yes” in certain boxes, including boxes labeled "Addl. Reason to Invest.?” and "Prosecute?” Without any explanation or elaboration of those entries, however, we find them insufficient to establish that the police would have discovered probable cause to charge Jackson earlier had further investigation been undertaken in 1994.
. The state contends Jackson concealed his crimes by lying to the police and suggesting a motive for his daughter to have fabricated any claims of abuse in 1994. Such concealment, the state argues, tolled the statute of limitation until 2002, when R.’s "unambiguous allegations wеre reported to and substantiated by law enforcement.”
See Escobar-Mendez,
. We note that Officer Sueme, who was directly involved in the 1994 investigation and who authored the report in evidence, was available but did not testify at the hearing on Jackson's motion to dismiss. She and other relevant witnesses might be helpful in clarifying various factual questions that the current record leaves open.
