State v. Diaz

Court of Appeals of Arizona·Decided September 18, 2026·No. 1 CA-CR 25-0393·Unpublished·Daniel J. Kiley

Opinion

NOTICE: NOT FOR OFFICIAL PUBLICATION.

UNDER ARIZONA RULE OF THE SUPREME COURT 111(c), THIS DECISION IS NOT PRECEDENTIAL AND MAY BE CITED ONLY AS AUTHORIZED BY RULE.

IN THE

ARIZONA COURT OF APPEALS

DIVISION ONE

STATE OF ARIZONA, Appellee,

v.

JOSEPH JONATHAN DIAZ, Appellant.

No. 1 CA-CR 25-0393 FILED 09-18-2026

Appeal from the Superior Court in Coconino County No. S0300CR202400184

The Honorable Joshua Steinlage, Judge

AFFIRMED IN PART, VACATED IN PART AND REMANDED

COUNSEL

Arizona Attorney General’s Office, Phoenix By Eliza C. Ybarra Counsel for Appellee

Feldman Royle Ahl, PLLC, Phoenix By David E. Ahl Counsel for Appellant

Decision of the Court

MEMORANDUM DECISION

Judge Daniel J. Kiley delivered the decision of the Court, in which Presiding Judge Andrew M. Jacobs and Judge Veronika Fabian joined.

K I L E Y, Judge:

¶1 Joseph Jonathan Diaz appeals his four convictions for child abuse. For the following reasons, we vacate three of his convictions, affirm the fourth, and remand to the superior court for further proceedings.

FACTS AND PROCEDURAL HISTORY

¶2 Viewed in the requisite light most favorable to affirming Diaz’s convictions, State v. Haywood, 257 Ariz. 472, 475, ¶ 2 (App. 2024) (citation omitted), the evidence in the record shows that Diaz began dating Rashea B. (“Mother”) in 2017. In mid-August 2017, Mother and her two children, 4-year-old Abby and 16-month-old Emma (both pseudonyms), moved into Diaz’s apartment in Flagstaff.

¶3 In early October 2017, Mother brought Emma to the emergency department at a local hospital. Medical staff observed several injuries, including bruises to her face and a bite mark on her cheek. Additionally, her hair appeared to have been pulled out by the roots on “multiple sections” of her “scalp.” X-rays revealed the presence of fractures of multiple bones, including her right humerus, left humerus, left tibia, and several forearm bones. Mother claimed that Emma had suffered the fractures after falling off of a recliner at home two days earlier. The doctors noted that Mother’s explanation did “not match the degree of injury nor the mechanism of injury,” and thus raised a “high concern for . . . abuse.”

¶4 Hospital officials contacted law enforcement. Police first interviewed Mother at the hospital, then went to Diaz’s apartment to speak with him. Diaz told a detective that Emma had injured her leg two days earlier when she fell while climbing on a recliner. He also stated that he may have inadvertently caused the bite mark on her cheek by kissing her too hard, and that Emma’s hair had been “cut off” in response to Emma pulling out her own hair.

¶5 Diaz was interviewed again at the police station in November 2017. Again, he claimed that Emma had injured her leg when she fell from

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a recliner, and that he shaved Emma’s head, with Mother’s approval, because she had been pulling out her own hair. He also claimed, for the first time, that Abby caused some of Emma’s other injuries. According to Diaz, Abby bit Emma on the cheek, causing the bite mark, and had previously hurt Emma by hitting her roughly with a plastic toy. Diaz provided no explanation for Emma’s arm injuries.

¶6 Diaz told investigators that Emma was not in daycare, that no babysitters watched after her, and that the only adults with access to her in Diaz’s home were himself and Mother. He denied abusing Emma. He also denied that Mother had done so, insisting that she “would never do this.”

¶7 The State charged Diaz with five counts of child abuse in violation of A.R.S. § 13-3623(A), (B).1 Although the indictment did not identify the specific injuries on which each count was based, the State later clarified, in a pretrial filing, that the fractures to Emma’s right and left humerus bones were the bases for Counts 1 and 3, respectively; that the fracture to her left tibia was the basis for Count 2; that the forearm fractures were the bases for Count 4, and that the various head injuries were the bases for Count 5.

¶8 Diaz stood trial in April 2025. The State called several of the medical practitioners who treated Emma at the hospital. Dr. Timothy Bonatus, for example, testified that he treated Emma in the emergency room and recognized that “the tibia fracture was clearly fresh,” as indicated by the attendant “swelling” and “bruising.” Dr. Matthew Dunn, the attending physician, testified that he found no indication that Emma had any condition which made her particularly susceptible to bone injuries. Dr. Dunn further testified that the tibia fracture would have made “[a]ny attempt to move” her left leg “incredibly painful” for Emma.

¶9 The investigating detectives, too, testified about their interviews with Diaz in October and November 2017, and the recording of Diaz’s November 2017 interview at the police station was played for the jury.

¶10 The State also called Tara Salce, a nurse practitioner who specializes, among other things, in identifying and treating child abuse, as an expert witness to testify about her review of Emma’s treatment and diagnostic records. Salce’s testimony made clear that she did not review the records alone. Instead, she testified that she “consulted” with her husband,

1 The State also charged Mother in a separate case.

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a radiologist with a “special interest” in what she called “child abuse radiology.” Salce explained that she consulted with her husband because she had no “specialized training,” and so “need[ed] to seek expert consultation” to form an opinion as to “the ages of fractures” and “the kinds of mechanisms that might cause these various injuries.”

¶11 Salce testified that the right humerus fracture occurred “less than one week” before the X-ray was taken and that it could have resulted from “a direct blow” or “a pretty significantly strong yank or shake.” She stated the left humerus fracture occurred between “one week to one month” earlier and resulted “either from a direct blow, a yanking, or twisting.” Salce further testified that the tibial fracture occurred “three to seven days” before the X-ray was taken and resulted from “a twisting or torsion mechanism.” She also acknowledged that her testimony on these matters relied on her husband’s opinions about how and when the injuries were sustained.

¶12 After the State rested, Diaz moved for a directed verdict of acquittal on all counts. The court denied the motion.

¶13 Over the State’s objection, the court allowed Diaz to call Mother as a witness. She asserted her constitutional right against selfincrimination in response to every question put to her. Diaz did not call any other witnesses and did not testify on his own behalf.

¶14 The jury convicted Diaz on Counts 1, 2, 3, and 5, but found him not guilty on Count 4. The court sentenced him to consecutive 10-year prison terms on Counts 1 and 3, followed by three-year probation terms on Counts 2 and 5. Diaz timely appealed. We have jurisdiction pursuant to Article 6, Section 9, of the Arizona Constitution and A.R.S. §§ 12-120.21, 13- 4031, and 13-4033(A).

DISCUSSION

¶15 Diaz challenges all his convictions. In considering his challenges, we view the evidence in the light most favorable to sustaining the jury’s verdicts, resolving all reasonable inferences against the defendant. State v. Felix, 237 Ariz. 280, 283, ¶ 2 (App. 2015).

I. Right to Confront Witnesses

¶16 Diaz argues that his convictions on Counts 1 and 3 must be vacated because Salce’s testimony, which relied on her husband’s opinions about the age of Emma’s humerus fractures and the mechanism of injury,

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was admitted in violation of his right to confront witnesses against him. See U.S. Const. amend. VI (“In all criminal prosecutions, the accused shall enjoy the right . . . to be confronted with the witnesses against him[.]”); Ariz. Const. art. II, § 24 (“In criminal prosecutions, the accused shall have the right to . . . to meet the witnesses against him face to face[.]”).

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