TONN v. MOORE
Annotate this Case
Download PDF
NOTICE: THIS DECISION DOES NOT CREATE LEGAL PRECEDENT AND MAY NOT BE CITED EXCEPT AS AUTHORIZED BY APPLICABLE RULES. See Ariz. R. Supreme Court 111(c); ARCAP 28(c); Ariz. R. Crim. P. 31.24 IN THE COURT OF APPEALS STATE OF ARIZONA DIVISION ONE MATTHEW TONN, a married man in his individual capacity and as surviving parent of Adam Tonn, decedent, ) ) ) ) Plaintiff/Appellant, ) ) v. ) ) ERIC MOORE and AMY LYNN MOORE, husband ) and wife, ) ) Defendants/Appellees. ) ) DIVISION ONE FILED: 4/23/2013 RUTH A. WILLINGHAM, CLERK BY: mjt No. 1 CA-CV 12-0372 DEPARTMENT D MEMORANDUM DECISION (Not for Publication Rule 28, Arizona Rules of Civil Appellate Procedure) Appeal from the Superior Court in Maricopa County Cause No. CV2011-016520 The Honorable Eileen S. Willett, Judge AFFIRMED Goldberg & Osborne By John Edwards Osborne Douglas L. Settel Attorneys for Plaintiff/Appellant Phoenix Hill & Hill, PLC By R. Corey Hill Ginette M. Hill and DeCiancio Robbins, PLC By Christopher Robbins Attorneys for Defendants/Appellees Phoenix Tempe G E M M I L L, Judge ¶1 Matthew Tonn ( Matthew ), father of decedent Adam Tonn, appeals from the superior court s decision finding that Adam s suicide from a self-inflicted gunshot wound was an intervening act and superseding cause that precludes Matthew s cause of action against Amy and Eric Moore (collectively the Moores ), Adam s mother and stepfather, for negligently storing the firearm Adam used to take his own life. Because we agree with the superior court that Adam s suicide was an intervening superseding cause, we affirm. FACTS AND PROCEDURAL HISTORY ¶2 Adam was the fourteen-year-old son of Matthew and Amy. Matthew and Amy were divorced and had joint custody of Adam and his younger sister. Adam shared a residence with his mother, his stepfather Eric, and his sister. On November 20, 2010, Adam chose to stay at home while the rest of the family went to the movies. When they returned home, the family found Adam dead in the master bedroom from a self-inflicted gunshot wound. ¶3 The gun Adam used was registered to Eric. The gun was stored, unloaded, in an unlocked case hidden under a pile of clothes on ammunition a was shelf in hidden Amy and separately clothes in the same closet. Eric s under bedroom a closet. different pile The of Neither of the Moores had told Adam where the gun and ammunition were stored. 2 ¶4 Adam had previously completed a Firearms Safety Training Class in September 2009, and had achieved Sharpshooter Classification through the NRA/Winchester Marksmanship Program in October 2009. He was a member of the Junior Division of the Rio Salado Sportsman s Club. He also shot with Matthew who had trained him how to handle firearms. He had shot Eric s handgun only once. ¶5 A police investigation and coroner s report determined Adam s death to be a suicide. Although Adam had twice seen a therapist for behavioral issues, the parties agreed that he had never shown any signs of depression or suicidal ideation. psychologist Adam had seen confirmed that Adam had The given no indication of being suicidal or depressed. ¶6 Matthew Moores. He firearm stored and in filed alleged that ammunition a a residence wrongful death Eric negligent was accessible, occupied action unsecured, by a minor against the leaving the in and improperly and that this negligence was a direct and proximate cause of Adam s death. ¶7 The Moores filed a motion for summary judgment. They argued primarily that, as a matter of law, Adam s suicide was not foreseeable and that Matthew could not show that access to Eric s firearm was the proximate cause of Adam s death because Adam s suicide response, was Matthew an intervening, challenged the 3 superseding Moores cause. position that In the evidence established that Adam committed suicide, but argued that even if Adam s death was a suicide, it was foreseeable because a minor with access to a gun is at risk of injuring himself or others. He argued the Moores failure to secure the gun created the risk that Adam would kill himself, and therefore the suicide could not be a superseding cause. ¶8 At oral argument in superior court, the Moores acknowledged they had an obvious duty of care to act reasonably under the circumstances. They contended they had no reason to take additional precautions regarding the gun because no one had reason to believe that Adam would use the gun to harm himself. At the conclusion of the oral argument, the parties agreed with the court s summation that the only question of law at issue was whether a child s suicide is an intervening superseding event when a child had access to a parent s gun. ¶9 The court found that suicide is uniformly treated as an unforeseeable superseding cause which relieves the original actor of liability. committed no crime The court also reasoned the parents had and noted that the criminal prohibition against an unaccompanied minor carrying a firearm includes an exception for a minor on his parent s private property. See Arizona Revised Statutes ( A.R.S. ) section 13-3111(A) (2010). The court granted the Moores motion Matthew filed a timely notice of appeal. 4 for summary judgment. We have jurisdiction pursuant to A.R.S. § 12-2101(A)(1) (Supp. 2013). DISCUSSION ¶10 Summary judgment may be granted when there is no genuine issue as to any material fact and [] the moving party is entitled to a judgment as a matter of law. 56(c). Ariz. R. Civ. P. In reviewing a motion for summary judgment, we determine de novo whether any genuine issues of material fact exist and whether the trial court properly applied the law. Eller Media Co. v. City of Tucson, 198 Ariz. 127, 130, ¶ 4, 7 P.3d 136, 139 (App. 2000). from those We view the facts and the inferences to be drawn facts in the light most against whom judgment was entered. Junction, 185 Ariz. 43, 45, 912 favorable to the party Prince v. City of Apache P.2d 47, 49 (App. 1996). Further, we will affirm summary judgment when no reasonable juror could conclude that the standard of care was breached or that the damages conduct. 454, were proximately caused by the defendant s 458, Grafitti-Valenzuela v. City of Phoenix, 216 Ariz. ¶ 13, 167 P.3d 711, challenges the 715 (App. 2007) (citation court s decision omitted). ¶11 Matthew superior finding that Adam s suicide was an intervening superseding cause precluding recovery against the Moores for negligence. 1 1 To make Matthew also argues that the superior court wrongly concluded that the Moores owed no duty to minor children living in their home to safely secure a firearm. The court did not 5 a claim for negligence, a plaintiff must prove a duty requiring the defendant to conform to a certain standard of care, a breach by the defendant of that duty, a causal connection between the defendant s conduct and the injury, and actual damages. Gipson v. Kasey, 214 Ariz. 141, 143, ¶ 9, 150 P.3d 228, 230 (2007). defendant s act is the proximate cause of an injury if A the conduct, in a natural and continuous sequence, unbroken by any efficient intervening cause, produces an injury injury would not have occurred without the conduct. and if the Pompeneo v. Verde Valley Guidance Clinic, Inc., 226 Ariz. 412, 414, ¶ 9, 249 P.3d 1112, 1114 (App. 2011) (citation omitted). An efficient intervening cause is an independent cause, occurring between the original act and the harm that is necessary in causing the harm. Barrett v. Harris, 207 Ariz. 374, 378, ¶ 11, 86 P.3d 954, 958 (App. 2004). An intervening cause is a superseding cause when the intervening cause was unforeseeable and, when viewed in hindsight, extraordinary. Id. When an intervening cause is within the scope of the original risk created by the defendant s make such a finding. As the court noted, the Moores agreed at oral argument that they had a duty of care to act reasonably under the circumstances. The court found only that Matthew could not prove proximate causation as a matter of law because Adam s suicide was an intervening act that was a superseding cause of the injury. To the extent that Matthew s argument could be construed as advocating for a particular standard of care, we need not and do not address the argument because we conclude that the court properly concluded that Adam s suicide was a superseding cause. 6 negligence, the intervening cause is not a superseding cause and the defendant is not relieved of liability. Rossell v. Volkswagen of Am., 147 Ariz. 160, 169, 709 P.2d 517, 526 (1985) (citing Parness v. City of Tempe, 123 Ariz. 460, 464, 600 P.2d 764, 768 (App. 1979)). ¶12 Suicide, however, is almost universally considered a superseding cause that is neither incident of the risk created. foreseeable nor a normal Maricopa Cnty. v. Cowart, 106 Ariz. 69, 71, 471 P.2d 265, 267 (1970). We have previously explained: As a general rule a person will not be relieved of liability by an intervening force which could reasonably have been foreseen, nor by one which is a normal incident of the risk created. However, if such intervening force takes the form of suicide the practically unanimous rule is that such act is a new and independent agency which does not come within and complete a line of causation from the wrongful act to the death and therefore does not render defendant liable for the suicide. Tucson Rapid Transit Co., v. Tocci, 3 Ariz. App. 330, 334, 414 P.2d 179, 183 (1996) (citing 11 A.L.R.2d 751 (1950)). ¶13 Matthew argues that Adam s suicide was foreseeable and relies on Crown v. Raymond, 159 Ariz. 87, 764 P.2d 1146 (App. 1988). In Crown, a minor took her own life with a weapon she had purchased the day before using a driver s license on which the date of birth had obviously been altered to make her seem older. Id. at 88, 764 P.2d at 1147. 7 Her surviving parents sued the gun shop owner, who contended that the plaintiffs could not show proximate foreseeable. cause because the minor s Id. at 90, 764 P.2d at 1149. suicide was not This court found that the decedent fell within the protection of a state statute prohibiting the furnishing of a firearm to a minor without a parent s consent. of the statute Id. This court reasoned that the existence expressed legislative awareness . . . that children in possession of guns are at risk of injuring either themselves or others, either negligently or intentionally and that the legislature had therefore declared that injury to the minor or others was foreseeable when guns are sold to minors without their parents knowledge or consent. ¶14 The court s based on the statute. finding of Id. foreseeability in Crown was The case before us does not involve the unlawful sale of a firearm to a minor. It concerns, rather, the use of a firearm by an unattended minor in a private residence. Under A.R.S. § 13-3111(A), an unemancipated, unaccompanied minor is prohibited from knowingly carrying or possessing a firearm on private property except private property owned or leased by the minor or the minor s parent, grandparent or guardian. statute, the legislature has declined to By this criminalize unaccompanied minors possession of firearms in their parent s home, which occurred in this case. Consequently, unlike in Crown, the legislature here has not similarly expressed a view 8 toward the foreseeability of injury created by a minor s possession of a firearm in his or her parent s home. ¶15 Matthew does not suggest that the facts of the case made Adam s suicide foreseeable. 2 Matthew and the Moores agreed that they had not observed or learned of anything that would indicate that Adam might take his own life. The psychologist Adam had twice seen for behavioral issues also reported that Adam had shown no signs of depression indications that he would commit suicide. and had given no Given the absence of any hint even in hindsight that Adam might take his own life, his suicide was unforeseeable and extraordinary. We see nothing in the this record to cause us to deviate from generally accepted view that suicide is an intervening superseding event relieving the defendant of any alleged liability. We conclude as a matter of law, therefore, that no reasonable juror could determine on this record that the Moores actions were the proximate cause of Adam s death. ¶16 Matthew also argues that having an unsecured firearm in the home greatly increases the risk of adolescent suicide. 2 Matthew contended in the trial court that a question of fact existed as to whether Adam had, in fact, committed suicide. He suggested that Adam s inexperience with the particular firearm may have caused Adam to accidentally discharge the weapon or that Adam may have been playing Russian roulette. Matthew does not reassert this contention on appeal, and so has abandoned it. See Torrez v. Knowlton, 205 Ariz. 550, 552 n.1, ¶ 3, 73 P.3d 1285, 1287 n.1 (App. 2003) (issues not argued on appeal are deemed abandoned). 9 Even were we to accept this statement as true, the argument is more appropriately made to the legislature. CONCLUSION ¶17 As intervening, Moores from a matter of superseding liability inappropriately. law, cause for Adam s for his allegedly suicide death, storing constituted an releasing the the firearm We therefore affirm the trial court s decision granting summary judgment. /s/ _________________________________ JOHN C. GEMMILL, Presiding Judge CONCURRING: /s/ _________________________________ JON W. THOMPSON, Judge /s/ _________________________________ DONN KESSLER, Judge 10
Some case metadata and case summaries were written with the help of AI, which can produce inaccuracies. You should read the full case before relying on it for legal research purposes.
This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
