*122 OPINION
Sherman Earl Taylor (defendant) petitioned for review of the court of appeals’ memorandum decision affirming his conviction for second degree murder. We granted review to determine: (1) whether the trial court erred by refusing to give a justification instruction pursuant to A.R.S. § 13-411, and (2) whether the trial court erred by precluding evidence of the victim’s prior conviction for child abuse. We have jurisdiction pursuant to Ariz. Const, art. 6, § 5(3), and A.R.S. § 12-120.24.
FACTUAL AND PROCEDURAL BACKGROUND
Defendant, his girlfriend, and their children lived together in his girlfriend’s Tucson apartment. The victim was the girlfriend’s brother.
On July 28, 1989, the victim entered the apartment, argued with defendant, and told him he had thirty days to get out. Althоugh defendant tried to avoid the fight, the two men pushed and shoved each other and the victim punched defendant. Before he left, the victim told defendant he would be back for him and would “kick his butt.” Defendant testified that the victim told him, “I am going to take you down” and “once I take you down I am going to deal with your family.” The argument concerned a shooting incident a week earlier in which the police were called. The victim was upset because he thought defendant had “snitched” on him.
The victim returned to the apartment the next day. He entered the apartment, stuck his finger in defendant’s face, and begаn threatening him. After defendant pushed the victim’s hand away, the two men began pushing and shoving. The argument went outside and escalated, with the victim spitting in defendant’s face and punches being thrown. Witnesses testified that the victim appeared to be the aggressor and was threatening to “take down” defendant аnd his family.
Eventually, the fighting stopped and the victim said he would be bdck for defendant. The victim then went out to his truck, where defendant believed the victim carried a gun, and defendant went into the apartment. The victim was moving toward the apartment when defendant came out with a gun and fired five times. The victim turned and rаn when defendant began firing. Three bullets hit the victim, killing him. Two of the three bullets entered the victim’s back and travelled diagonally across the body. Defendant admitted that he could not see the victim’s hands and did not know whether he had a gun.
Defendant was indicted on one count of first degree murder. Before trial, the State moved to preclude evidence of the victim’s child abuse conviction for immersing a child in a bathtub with scalding water. The trial court found that the four-year-old conviction did not “shed much light” on the issue of who the aggressor was, and therefore granted the State’s motion. Defendant requested a jury instructiоn on justification pursuant to A.R.S. § 13-411, but the court refused it. The jury found defendant not guilty of first degree murder, but guilty of second degree murder. The court imposed a mitigated sentence of twelve years. The court of appeals affirmed the conviction and sentence in a memorandum decision. State v. Taylor, No. 2 CA-CR-90-0198 (Ct.App. Feb. 28, 1991) (mem.).
DISCUSSION
I. Justification Instruction Pursuant To A.R.S. § 13-411
Defendant dеfended on the basis of justification and requested that the jury be instructed on A.R.S. § 13-411. Section 13-411 provides in part that:
A. A person is justified in threatening or using both physical force and deadly physical force against another if and to the extent the person reasonably believes that physical force or deadly physical force is immediately necessary to prevent the other’s commission of ... manslaughter ..., second or first degree murder ..., or aggravated assault____
*123 The trial court refused to give the instruction.
We recently stated “that the justification defense in § 13-411 applies only when a home, its contents, or its residents are being protected by the use of force against another.”
State v. Korzep,
Defendant argues that the facts presented at trial support giving a justification instruction pursuant to § 13-411 because he believed the victim was returning to the apartment to commit aggravаted assault, first degree murder, or second degree murder upon him or his family. The State argued in the court of appeals that § 13-411 applies “to altercations arising in the home,” but does not apply in this case because defendant left the apartment before he began shooting. 1 The cоurt of appeals agreed and concluded that the evidence did not support giving the instruction. Taylor, slip op. at 5-6. Defendant argues that he should not have to wait for an intruder “to commit some violent atrocity before taking defensive action” and should not have to allow the intruder “to seek him оut of the inner recesses of [his] home to commit a further offense in the presence of [his] children.”
We agree with defendant that he should not have to wait until an intruder physically enters the home before taking defensive action. The broad language in the legislative declaration of poliсy in 1983 supports this conclusion. The legislature expressed its intent that “a person’s home ... and the residents therein shall be totally respected and protected in Arizona.” Laws 1983, Ch. 255, § 1. It also expressed an intent “to restore the total sanctity of the home in Arizona.”
Id.
We believe this intent is furthered by permitting a rеsident to go outside the home if necessary to prevent the commission of the crimes enumerated in § 13-411. Had the legislature intended § 13-411 to apply only when force is used inside the home, it easily could have said so.
See Korzep,
We continue to believe that “the justification defense in § 13-411 applies only when a hоme, its contents, or its residents are being protected by the use of force against another.”
Id.
at 492,
Bеcause § 13-411 may apply even though defendant was outside the apartment when he shot the victim, we must reverse defendant’s conviction. A criminal defendant is entitled to have the jury instructed on the justification defense in § 13-411 “whenever there is the slightest evidence of justification for the defensive
*124
act.”
Id.
at 494,
David told mе, punk, I am going to kill you. Now I know he had the weapon and I know he is running to his truck to get a weapon so I ran into the house and when I ran into the house, I got my .22 and I — after I got my .22, I run back to the door and when I run back to the door I seen David coming back away from the truck toward the apartment and then run out, run out of the house and as I ran out of the house I started shooting.
Other witnesses also testified that the victim had threatened defendant and his family. We believe this constitutes at least “the slightest evidence of justification,” and therefore hold that the trial judge erred by refusing to instruct the jury on § 13-411. This refusal to so instruct the jury is reversible error.
II. Admissibility of the Victim’s Child Abuse Conviction
Although our holding above regarding the § 13-411 instruction is sufficient to require a reversal of defendant’s conviction, we also address the admissibility of the victim’s child abuse conviction because it is likely to be raised on remand. Defendant argues that the victim’s prior conviction for child abuse should be аdmissible to prove the victim’s history of aggressive behavior, propensity for violence, disregard for the physical safety of others, and disregard for the law. He also argues that it is relevant to demonstrate his own state of mind because he knew of the conviction and believed the victim to be viоlent.
Arizona courts have long held that a murder defendant who defends on the basis of justification should be permitted to introduce evidence of specific acts of violence by the deceased if the defendant either observed the acts himself or was informed of the acts before thе homicide.
See, e.g., State v. Young,
There can be little doubt that the victim’s act of immersing a child in scalding water represents an act of viоlence.
See State v. Arnett,
Rule 404(b) provides that
*125 [ejvidence of other crimes, wrongs, or acts is not admissible to prove the character of a person in order to show that he acted in conformity therewith. It may, however, be admissible for other purposes____
Ariz.R.Evid. 404(b), 17A A.R.S. Becausе the victim’s prior conviction is relevant to defendant’s state of mind, it may be admissible under Rule 404(b).
See, e.g., State v. Jeffers,
Our determination that the victim’s prior conviction is relevant and may be admissible under Rule 404(b), however, does not end our inquiry into whether it should be admitted. Even if the conviction is admissible under Rule 404(b), it “may still be excluded under Rule 403 if the trial judge finds its probative value is substantially outweighed by the danger of unfair prejudice____”
State v. Robles,
[Bjecause of the risk of improper use, the trial judge has a special obligation to insure that [the] probative value of the evidence for the purpose offered is sufficiently great in the context of the casе to warrant running that risk. The discretion of the trial judge under Rule 403 to exclude otherwise relevant evidence because of the risk of prejudice should find its most frequent application in this area.
Udall & Livermore, supra note 3, at § 84, pp. 179-80 (footnote omitted).
The problem here is the trial court did not explicitly weigh the prejudice of the victim’s prior conviction against its probative value. Neither did the court of appeals. Rather, it “agree[d] with the trial court that the victim’s prior conviction, which resulted from immersing a child in scalding water, was not relevant to appellant’s state of mind and the reasonableness of his belief that the use of deadly force was necessary.” Taylor, slip op. at 3 (citation omitted) (emphasis added). For the reasons stated above, we believe the trial court erred if it found the prior conviction irrelevant.
Unlike the court of appeals, however, we are not sure that the trial court found the prior conviction irrelevant. Rather, the record indicates that the court may have been weighing the prejudice against the probative value. When arguing that the prior conviction should not be admitted, the State contended that “it’s more prejudicial than anything,” and that it “Q]ust inflames the jury.” After hearing argument from defense counsel, the court stated that “I am not convinced in my mind that a 4-year-old conviction for child abuse sheds much light on who was the aggressor in the confrontation between [defendant] and [the victim].” Additionally, the court did not “think a child abuse conviction would worry [defendant] very much.” Even though the court did not mention Rule 403 or the prejudice side of the Rule 403 analysis, we believe the court’s statements, when taken in context with the State’s argument, indicate that the trial court may have been weighing the prejudice against the probative value.
We cannot determine with any degree of certainty, however, whether the trial court excluded the victim’s prior conviction because he considered it irrelevant or because he believed the prеjudice outweighed the probative value. “A remand with instructions to conduct a Rule 403 determination may be ordered when uncertainty in a trial court’s ruling might be removed.”
Shows v. M/V Red Eagle,
DISPOSITION
We reverse the conviction and remand this case to the trial court for proceedings consistent with this opinion. We vacate those portions of the court of appeals’ memorandum decision addressing whether the trial court should have instructed the jury on A.R.S. § 13-411 and whether the trial court should have admitted evidence regarding the victim’s child abuse conviction.
Notes
. The State acknowledged receipt of the petition for review, but filed no separate response in this court. It urged us to deny review, arguing that the issues "were adequately addressed and resolved on appeal.”
. We emphasize that we do not hold that this justification defense applies any time a defendant claims to be acting to protect the home, its contents, or its residents. Rather, the crimes that the defendant seeks to prevent must be reasonably related to the home, its contents, or its residents. Given the events of the night of the shooting, the events of the preceding night, and defendant’s proximity to the apartment at the time he shot the victim, we believe this standard is met in this case.
. Evidence is relevant if it has
“any tendency
to make the existence of any fact that is of consequence to the determination of thе action more probable or less probable than it would be without the evidence.” Ariz.R.Evid. 401, 17A A.R.S. (emphasis added). "This standard of relevance is not particularly high.”
State v. Oliver,
. Defendant’s girlfriend had three children, two of whom were defendant’s children. Two of the children were in the apartment at the time of the shooting. The third child had already been taken away to a neighbor’s apartment.
.
Shows
was overruled on other grounds by
Green v. Bock Laundry Machine Co.,
490 U.S.
*126
504,
