Arizona Second-Degree Murder Lawyers
Charged with second-degree murder after a fatal incident in Arizona? Under A.R.S. § 13-1104 it is a Class 1 felony carrying 10 to 25 years in prison. Do not talk to police. Defeating the “intent” or “extreme indifference” theory can reduce the charge to manslaughter, or less.
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What Is Second-Degree Murder in Arizona?
Quick answer: In Arizona, second-degree murder (A.R.S. § 13-1104) is an unlawful killing committed intentionally or knowingly, or recklessly under circumstances showing extreme indifference to human life, without the premeditation that defines first-degree murder. It is a Class 1 felony with a 10 to 25 year sentence (16 years presumptive). In fatal-crash and DUI cases, the whole fight is often whether the conduct was extreme indifference (murder) or merely reckless (manslaughter).
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Former Prosecutors · Law Enforcement · Public Defenders
When you call Tamou Law Group, you reach a firm that handles criminal defense exclusively, with serious experience defending second-degree murder and other homicide cases across Arizona. Our team includes former prosecutors and law enforcement officers, so we know exactly how the State builds these cases, and where they fall apart.
At many large firms, the name on the building is a marketing figurehead, you rarely get them on the phone and your case goes to a junior associate. When you hire Tamou Law Group, your case is handled by a full team of attorneys, not associates, including Michael Tamou.
On This Page
- What Is Second-Degree Murder in Arizona?
- Is second-degree murder a Class 1 felony in Arizona?
- What is the sentence for second-degree murder, and is prison mandatory?
- What is the difference between second-degree murder and manslaughter?
- How does the State prove ‘extreme indifference to human life’?
- What are the strongest defenses to a second-degree murder charge?
- Can a second-degree murder charge be reduced to a lesser homicide?
- Negligence vs. Recklessness vs. Murder
- Penalties & Sentencing
- Defenses That Work
- Our Defense Team
- FAQs
If you’ve been charged with second-degree murder in Arizona, you probably have urgent questions about what you’re facing and what comes next. Here are straight answers to the questions people ask most, with a plain-English breakdown of the law under A.R.S. § 13-1104, the penalties, and the defenses that matter most.
Is second-degree murder a Class 1 felony in Arizona?
Yes. Second-degree murder under A.R.S. § 13-1104 is a Class 1 felony, the most serious class below first-degree murder. It is not eligible for probation, and a conviction requires the State to prove intent, knowledge, or extreme indifference to human life.
Awards & Recognition
Our recognition for Phoenix homicide defense is independently verified, click any award to confirm it:
- National Trial Lawyers Top 100
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- Elite Lawyer 2026 – Criminal Defense
- Super Lawyers – Southwest
- National College for DUI Defense (NCDD)
When you are looking for the best Phoenix homicide lawyers, these are the independently verified credentials that matter, earned by Founding Attorney Michael Tamou and a full team of attorneys, including former prosecutors.
What is the sentence for second-degree murder, and is prison mandatory?
Under A.R.S. § 13-710 the first-offense range is 10 to 25 years, with a 16-year presumptive term. Prison is mandatory — there is no probation — and you must serve roughly 85% of the sentence before any release, so even the minimum is a lengthy term of real time.
What is the difference between second-degree murder and manslaughter?
Both are unlawful killings; the difference is your mental state. Second-degree murder requires intent, knowledge, or extreme indifference to human life, while manslaughter (A.R.S. § 13-1103) requires only recklessness. In fatal-crash and DUI cases the entire fight is often whether the conduct was extreme indifference (murder) or merely reckless (manslaughter).
How does the State prove ‘extreme indifference to human life’?
The State must show reckless conduct so dangerous that the law treats it like an intent to kill — for example a very high BAC, prior DUIs, wrong-way driving, or extreme speed. This is a high bar, and showing the conduct was reckless but not extreme is what moves a murder charge down to manslaughter.
What are the strongest defenses to a second-degree murder charge?
Key defenses include lack of the required mental state (no intent, knowledge, or extreme indifference), self-defense or justification, challenges to causation, and, where a sudden quarrel or heat of passion is involved, reduction to manslaughter. In DUI cases, attacking the blood draw and rising-BAC science undercuts the extreme-indifference theory.
Can a second-degree murder charge be reduced to a lesser homicide?
Yes. By defeating the intent or extreme-indifference theory, a second-degree murder charge can be reduced to manslaughter or even negligent homicide, dropping the exposure by a decade or more. Where the State cannot prove causation at all, the charge can be dismissed.
Negligence vs. Recklessness vs. Murder
In a fatal crash, the driver’s mental state determines the charge, and the charge determines whether you face probation or decades in prison.
| Driver’s Mental State | Charge | Statute | Felony Class | Prison Range |
|---|---|---|---|---|
| Criminal negligence (should have known the risk) | Negligent Homicide | 13-1102 | Class 4 (dangerous) | 4–8 years |
| Recklessness (knew and disregarded the risk) | Vehicular Manslaughter | 13-1103 | Class 2 (dangerous) | 7–21 years |
| Extreme indifference to human life | Second-Degree Murder | 13-1104 | Class 1 | 10–25 years |
Ranges shown are for a first offense. Moving a case down even one rung on this ladder can mean years, or decades, of difference.
What the State Must Prove for Second-Degree Murder
To convict you of Second-Degree Murder under A.R.S. § 13-1104, the prosecutor must prove every one of these elements beyond a reasonable doubt. If even one fails, the charge fails.
- 1Causation. Your conduct actually caused the death of another person, not an intervening event or third party.
- 2A resulting death. Another person died.
- 3A culpable mental state. You acted intentionally or knowingly, OR recklessly under circumstances manifesting extreme indifference to human life. The extreme-indifference theory is the central battleground in fatal-crash and DUI cases.
- 4No premeditation. Unlike first-degree murder, planning is not required, but if the State cannot prove the mental state above, the charge should drop to manslaughter or negligent homicide.
Examples of Conduct Charged as Second-Degree Murder
- A fatal DUI crash where the State alleges a very high BAC or prior DUIs (extreme indifference)
- Wrong-way or extreme-speed driving that results in a death
- An intentional or knowing killing committed without premeditation
- A reckless act creating a grave risk of death, such as firing into an occupied vehicle
What Sentence Could You Actually Face?
Second-degree murder is a Class 1 felony punishable by 10 to 25 years in prison under A.R.S. § 13-710 (16 years presumptive). Probation is not available, and roughly 85% must be served before release.
Class 4
Negligent Homicide
Class 2
Vehicular Manslaughter
Class 1
Second-Degree Murder
⚠ “Dangerous Offense” Means Flat Time
A dangerous-offense designation under A.R.S. § 13-704 removes probation as an option and requires the sentence to be served day-for-day, with no “good time” release. That is why fighting the charge level and the dangerous designation, not just the facts, is the core of the defense.
How We Fight Arizona Second-Degree Murder Cases
Every case has weak points. These are the defenses we look at first.
Attacking Causation & the Crash
Lack of Causation. The State must prove your driving, not another factor, caused the death. A third driver, the decedent’s own conduct, or an intervening event can break the chain.
Faulty Accident Reconstruction. Police reconstructions are often wrong on speed, point of impact, or timing. Our independent experts frequently reach the opposite conclusion.
Unavoidable Accident. If a reasonable driver could not have prevented the crash, there is no crime, only a tragedy.
Mechanical Failure or Road Conditions. Brake failure, tire blowouts, defective design, or hazardous road and weather conditions can be the true cause.
Sudden Medical Emergency. An unforeseeable seizure, stroke, or cardiac event at the wheel negates the culpable mental state.
Attacking Mental State & the Evidence
Accident, Not Recklessness. Manslaughter requires recklessness, a conscious disregard of a substantial risk. Ordinary negligence or a momentary lapse is not enough, and can defeat or reduce the charge.
Fighting the Charge Level. We work to move the charge down the ladder, from second-degree murder to manslaughter, or from manslaughter to negligent homicide, cutting the prison exposure sharply.
Blood Draw & BAC Challenges. Where DUI is alleged, we challenge the warrant, the draw, lab procedure, and rising-BAC science used to prove impairment at the time of driving.
Unlawful Stop, Search & Statements. Evidence and admissions obtained through constitutional violations, or without Miranda, can be suppressed.
Event Data Recorder Disputes. “Black box” data can be misread or incomplete. We bring in EDR analysts to test what it really shows.
The Experts We Bring to the Table
The State builds fatal-crash cases with police reconstructionists and crime labs. We answer with the same caliber of specialists, so the government’s science gets challenged by people who do this for a living.
Accident Reconstructionists
Crash Dynamics
Independently analyze speed, braking, point of impact, sight lines, and timing, often reaching conclusions that contradict the police report and break the State’s causation theory.
Forensic Toxicologists
BAC & Impairment
Challenge blood draws, lab protocol, and rising-BAC science used to allege impairment at the time of driving, central to fighting DUI-homicide and murder theories.
Event Data Recorder Analysts
“Black Box” Data
Extract and interpret the vehicle’s EDR data, speed, throttle, braking, and seatbelt use, and expose where the State has misread or cherry-picked it.
Biomechanical Engineers
Injury Causation
Assess whether the injuries and forces are consistent with the State’s account of how the crash happened, and who was driving.
Medical Examiners & Pathologists
Cause of Death
Provide independent review of the autopsy and cause of death, including pre-existing conditions and alternative causes the State overlooked.
Human Factors Experts
Perception & Reaction
Evaluate driver perception-reaction time, visibility, distraction, and whether a reasonable driver could have avoided the collision at all.
Recent Second-Degree Murder Defense Results
Every case is unique and results depend on the facts, but these examples reflect how our firm handles second-degree murder cases across Arizona.
Second-Degree Murder, Fatal DUI
Reduced to Manslaughter
By dismantling the ‘extreme indifference’ theory and the rising-BAC science, we moved a second-degree murder charge down to manslaughter, cutting a potential 25-year exposure.
Second-Degree Murder, Disputed Causation
Charges Dismissed
Independent reconstruction established that another driver caused the fatal collision. After we presented the evidence, the State dismissed the murder charge.
Second-Degree Murder
Not Guilty at Trial
The State could not prove the required mental state beyond a reasonable doubt. After trial, the jury returned a not-guilty verdict.
Second-Degree Murder, Self-Defense
Charges Dismissed
Surveillance and witnesses established justified self-defense; the State dismissed the case.
Reduced to Manslaughter
Charges Reduced
We defeated the intent and extreme-indifference theories, cutting the exposure by more than a decade.
Heat-of-Passion Killing
Reduced to Manslaughter
Evidence of a sudden quarrel supported a heat-of-passion manslaughter rather than murder.
What Clients Say About Tamou Law
Real Google reviews from clients we have defended across Phoenix and Maricopa County. Every review is from a criminal defense client, never padded with non-legal work.
Clients reach us searching in many ways, for the best second-degree murder lawyer in Arizona, for lawyers who handle second-degree murder charges, or for Phoenix second-degree murder defense and a Scottsdale second-degree murder attorney. Our Phoenix criminal defense lawyers and Scottsdale criminal defense attorneys defend second-degree murder and other homicide cases across Phoenix, Scottsdale, Mesa, Tempe, Chandler, Gilbert, Glendale, Peoria, and all of Maricopa County, from offices in both cities. This page is part of our Arizona violent crimes practice. Call 623-321-4699 or contact our team for a free, confidential consultation, 24/7.
Arizona Second-Degree Murder FAQs
Quick answers to the questions we hear most about second-degree murder charges, penalties, and defenses in Arizona.
What is second-degree murder in Arizona?
Second-degree murder (A.R.S. 13-1104) is an unlawful killing committed intentionally or knowingly, or recklessly under circumstances showing extreme indifference to human life, but without the premeditation required for first-degree murder. It is a Class 1 felony punishable by 10 to 25 years.
What is the difference between second-degree murder and manslaughter?
Both are unlawful killings; the difference is the mental state. Second-degree murder requires intent, knowledge, or extreme indifference to human life. Manslaughter (A.R.S. 13-1103) requires only recklessness, and negligent homicide only criminal negligence. Moving a case down this ladder can cut a decade or more off the exposure.
What does ‘extreme indifference to human life’ mean?
It is reckless conduct so dangerous that the law treats it like intent to kill, for example a very high-BAC fatal DUI, wrong-way driving, extreme speeding, or firing into an occupied vehicle. Defeating this theory to reduce the charge to manslaughter is often the central battle.
Is second-degree murder a Class 1 felony?
Yes. Under A.R.S. 13-710 the range is 10 to 25 years (16 presumptive), with no probation and roughly 85% of the sentence served before release. Prior convictions increase the range.
What is the difference between first- and second-degree murder?
First-degree murder requires premeditation (or felony murder) and can carry life or the death penalty. Second-degree murder is intentional, knowing, or extreme-indifference conduct without premeditation, carrying 10 to 25 years.
Can a second-degree murder charge be reduced to manslaughter?
Yes. By defeating the intent or extreme-indifference theory, a second-degree murder charge can be reduced to manslaughter or negligent homicide, dramatically lowering the sentence.
Can a fatal DUI be charged as second-degree murder?
Yes. With a very high BAC, prior DUIs, or wrong-way driving, the State may allege extreme indifference and charge a fatal DUI as second-degree murder. Reducing it to manslaughter is usually the goal.
What defenses work against a second-degree murder charge?
Lack of intent or knowledge, that the conduct was not extreme indifference, self-defense or justification, challenges to causation, and (where there was a sudden quarrel or heat of passion) reduction to manslaughter.
Will I also be sued by the victim’s family?
Very often. A killing typically triggers a civil wrongful-death lawsuit alongside the criminal case, and the two should be defended together.
Should I talk to the police if I’m accused?
No. Politely decline to answer questions and ask for a lawyer immediately. Statements made to police are one of the most common ways the State proves intent or extreme indifference.
Will I get a real attorney or a junior associate?
At many large firms the name on the door is a figurehead and your case goes to a rotating associate. At Tamou Law Group your defense is handled by a full team of experienced attorneys, not associates, including founding attorney Michael Tamou. Call 623-321-4699, 24/7.
Key Takeaways
- Second-degree murder (A.R.S. § 13-1104) is an unlawful killing that is intentional, knowing, or done with extreme indifference to human life, a Class 1 felony.
- It carries 10 to 25 years in prison (16 presumptive) under A.R.S. § 13-710, with no probation and roughly 85%+ served.
- The case usually turns on murder vs. manslaughter vs. negligent homicide, the difference is the mental state the State can prove.
- In fatal-DUI cases the State leans on high BAC or prior DUIs to argue “extreme indifference”, which we attack to bring the charge down.
- The strongest defenses attack causation, intent/extreme indifference, and the State’s accident reconstruction and toxicology.
- Your case is handled by a full team of attorneys, not associates, including Michael Tamou, available 24/7 at 623-321-4699.
Two Arizona Offices, One Team
We serve all of Maricopa County and the surrounding area, with free, confidential consultations 24/7 by phone and in-person meetings at either office by appointment.
Case Results Disclaimer: The results described on this page are based on specific facts and circumstances and do not guarantee or predict a similar outcome in any future case. Every case is different. Past results do not guarantee future results. No attorney-client relationship is formed by viewing this page or submitting a contact form until a written fee agreement has been signed. Tamou Law Group, PLLC is licensed to practice law in the State of Arizona. This website is for informational purposes only and does not constitute legal advice.