Background
Oliver Stoneburner, then 19 years old, met the 13-year-old victim at an arcade in the summer of 2022. Over a year later, in January 2024, the two began exchanging direct messages on Instagram. In those messages, Stoneburner acknowledged the victim’s age, writing “Ur 14” and adding, “If u was like 16 going on 17 id prolly be like fuck it.” The pair moved their conversation to Snapchat, and four days later met at a park before going to Stoneburner’s residence, where they had vaginal sex.
The victim reported the encounter to police two days later and turned over the underwear she had been wearing. DNA testing confirmed the presence of Stoneburner’s semen. Stoneburner voluntarily went to the police station the following night, was read his Miranda rights, and admitted to the sexual intercourse. A grand jury indicted him on one count of sexual conduct with a minor under 15, a class 2 felony. At trial, the jury convicted him, and the superior court sentenced him to 13 years in prison. Stoneburner appealed, arguing insufficient evidence and claiming he did not know the victim’s age.
The Court’s Holding
The Court of Appeals affirmed, rejecting Stoneburner’s sufficiency-of-evidence challenge. The court held that the victim’s testimony alone was sufficient to sustain the conviction, consistent with the principle that a victim’s testimony can uphold a conviction unless the account is “physically impossible or so incredible that no reasonable person could believe it.” Here, the testimony was corroborated by DNA evidence and Stoneburner’s own admissions to police.
The court also rejected Stoneburner’s argument that he did not know the victim was 14. Citing State v. Gamez and State v. Falcone, the court reaffirmed that while a victim’s age is an element of sexual conduct with a minor under A.R.S. § 13-1405, the defendant’s knowledge of the victim’s age is not. The offense is a strict-liability crime as to the age element. Even so, the court noted that Stoneburner’s own Instagram messages demonstrated he was aware of the victim’s age—he wrote “Ur 14” and acknowledged the age gap before meeting her.
Key Takeaways
- Under Arizona law, sexual conduct with a minor (A.R.S. § 13-1405) does not require proof that the defendant knew or believed the victim was underage—the victim’s actual age alone satisfies the age element.
- A victim’s testimony, standing alone, is sufficient to support a conviction for sexual conduct with a minor, provided the testimony is not physically impossible or utterly incredible.
- Corroborating evidence such as DNA results and a defendant’s admissions after a Miranda advisory further reinforce sufficiency but are not required where victim testimony is credible.
Why It Matters
This decision reinforces Arizona’s strict-liability framework for the age element in sexual-conduct-with-a-minor prosecutions. Defense counsel frequently raise a mistake-of-age defense, and this opinion reiterates that such arguments are legally irrelevant under current Arizona statute. The case also illustrates the evidentiary weight that courts afford victim testimony in sexual-offense prosecutions, particularly when corroborated by forensic evidence and defendant admissions.