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Manslaughter Charges in Arizona?
Your Freedom Can't Wait.
If you have been arrested for manslaughter, you need an attorney who will be there to help you through this very difficult situation. Matthew Lopez is a Phoenix criminal defense lawyer who is dedicated to providing clients with the best possible outcome for their cases. At Matthew Lopez Law, PLLC, we understand the stress you and your family are dealing with. Let us help you navigate the treacherous waters of the criminal defense system by thoroughly investigating your case and looking for issues that could lead to a dismissal or reduction in sentence.
Manslaughter occupies an unusual place in Arizona law. It is a serious Class 2 felony in its own right, and it is also the outcome a good defense fights toward when the state has charged murder. Under ARS 13-1103, the same death can be a murder or a manslaughter depending on the defendant’s mental state and whether the victim provoked the confrontation. Moving a case across that line can cut a sentence by more than a decade.
Arizona does not divide manslaughter into voluntary and involuntary the way many states do. Instead, the statute lists five separate paths to the same charge, ranging from ordinary recklessness to killing under duress. Which path the state alleges shapes the entire defense.
Matthew Lopez Law defends manslaughter charges throughout Arizona. Contact our firm for a confidential consultation.
Reckless killing. Recklessly causing the death of another person. Recklessness means the defendant was aware of a substantial and unjustifiable risk and consciously disregarded it. This is the most commonly charged theory.
Heat of passion. Committing second degree murder upon a sudden quarrel or heat of passion resulting from adequate provocation by the victim. This is the provision that lets a murder charge become manslaughter.
Assisting a suicide. Intentionally aiding another person to commit suicide.
Killing under duress. Committing second degree murder while being coerced by the use or threatened use of unlawful deadly physical force that a reasonable person in the same situation would have been unable to resist.
Death of an unborn child. Knowingly or recklessly causing the death of an unborn child by any physical injury to the mother, subject to the statutory exceptions for authorized medical procedures and for the mother herself.
The heat of passion theory is the most misunderstood part of the statute. Being angry, even justifiably furious, is not enough. Arizona requires adequate provocation by the victim, and three things have to line up:
Discovering a spouse’s infidelity in the moment, being physically attacked, or being confronted with a serious assault on a family member have all supported provocation arguments. Learning about an insult secondhand, or acting hours after the fact, generally has not. Where the timeline sits is often the difference between a 10-year murder floor and a manslaughter range that can include probation.
Manslaughter is a Class 2 felony. What matters just as much as the class is whether the state alleges the offense was a dangerous offense under ARS 13-704, meaning it involved a deadly weapon or dangerous instrument or the intentional infliction of serious physical injury.
|
Charging Posture |
First-Offense Range |
Presumptive |
Probation Available |
|
Non-dangerous Class 2 felony |
3 to 12.5 years |
5 years |
Yes |
|
Dangerous Class 2 felony |
7 to 21 years |
10.5 years |
No |
The gap between those two rows is the most consequential fight in most manslaughter cases. A firearm makes the dangerous allegation nearly automatic. A motor vehicle qualifies as a dangerous instrument, which is why fatal crash prosecutions usually carry the dangerous designation and its mandatory prison term.
Prior felony convictions increase both ranges substantially under ARS 13-703.
Arizona has no separate vehicular manslaughter statute. A death caused by driving is charged under the general homicide laws, and where it lands depends entirely on how the state characterizes the driving.
Prosecutors typically reach for manslaughter when they can establish recklessness: driving under the influence, extreme speeding, street racing, or aggressive driving with awareness of the risk. When the conduct looks like inattention rather than conscious risk-taking, such as a fatal crash caused by texting or falling asleep, negligent homicide is the appropriate charge. That distinction, recklessness versus criminal negligence, is worth roughly 13 years at the top of the range.
Because a vehicle is a dangerous instrument, vehicular manslaughter is typically charged as a dangerous felony with no probation eligibility. Accident reconstruction, event data recorder analysis, and toxicology review are central to contesting both the recklessness finding and the causation element. Arizona Department of Transportation crash data and roadway design records sometimes reveal contributing factors the initial investigation missed.
Recklessness versus negligence. The state must prove the defendant was actually aware of the risk and disregarded it. Evidence that the defendant failed to perceive a risk, rather than consciously ignored one, supports negligent homicide instead.
Self-defense. Justification under ARS 13-404 and ARS 13-405 is a complete defense to manslaughter. Once raised, the state must disprove it beyond a reasonable doubt. Many manslaughter charges arise from confrontations the defendant did not start.
Defeating the dangerous allegation. Showing that an object was not used as a deadly weapon, or that serious physical injury was not intentionally inflicted, removes the mandatory prison floor and restores probation eligibility.
Causation. The state must prove the defendant’s conduct caused the death. Intervening events, pre-existing medical conditions, delayed or inadequate medical care, and the conduct of the victim or a third party all bear on causation.
Duress. Where the defendant acted under a genuine threat of deadly force, the statute’s own coercion provision applies, and in some circumstances a full duress defense may be available.
Accident. A death that resulted from a genuine accident, without recklessness or criminal negligence, is not a crime at all.
|
Charge |
Mental State |
Class |
|
First degree murder |
Premeditation or felony murder |
Class 1 |
|
Second degree murder |
Intentional, knowing, or extreme indifference |
Class 1 |
|
Manslaughter |
Reckless, or heat of passion |
Class 2 |
|
Negligent homicide |
Criminal negligence |
Class 4 |
Under ARS 13-107(A), a prosecution for any homicide may be commenced at any time. There is no deadline on filing manslaughter charges in Arizona.
Manslaughter cases turn on two questions: what mental state the state can actually prove, and whether the dangerous offense allegation survives. Both are contested through expert analysis and early investigation, and both determine whether a client is facing probation eligibility or a seven-year mandatory minimum.
We serve clients in Tempe, Mesa, Apache Junction, Lake Havasu, Parker, and statewide. Every interaction confidential.
Contact us for a free consultation.
Every minute counts when you’re facing criminal charges in Arizona. Whether you were just arrested or have court next week, our team is ready to start building your defense right now. We offer free consultations and can start protecting your rights today with flexible payment plans that work for your budget.
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