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What is the sentence for first-degree murder in Arizona?
Quick answer: First-degree murder (A.R.S. 13-1105) is a Class 1 felony punishable by natural life, life with no possibility of release for 25 years, or the death penalty. It is the only Arizona offense eligible for capital punishment.
On This Page
- Overview
- What Is First-Degree Murder? (A.R.S. 13-1105)
- Penalties for First-Degree Murder: Prison & Sentencing
- The Dangerous-Offense Allegation (A.R.S. 13-704)
- How the State Builds a First-Degree Murder Case
- How We Defend a First-Degree Murder Charge in Phoenix
- Where Your Case Is Heard & What To Do Now
- FAQs
Both Sides
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 violent crime 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.
What Is First-Degree Murder? (A.R.S. 13-1105)
The starting point of any defense is understanding exactly what the State has to prove, and what it does not.
Under A.R.S. 13-1105, first-degree murder is a premeditated killing, a killing during certain felonies (felony murder), or the killing of a law-enforcement officer. It is the most serious charge in Arizona.
What the State Must Prove
- A death was caused.
- Premeditation (reflection, however brief), OR the death occurred during an enumerated felony, OR the victim was a peace officer.
- The act was intentional or knowing (or, for felony murder, occurred in the course of the felony).
Every element must be proven beyond a reasonable doubt. If any one fails, the charge fails.
Related & Lesser Charges
Reduces to second-degree murder or manslaughter when premeditation or malice is defeated.
Penalties for First-Degree Murder: Prison & Sentencing
Violent-crime sentencing in Arizona is driven by the dangerous-offense allegation and, in homicides, the degree of the killing.
First-degree murder is a Class 1 felony punishable by natural life, life with no release for 25 years, or the death penalty. It is the only charge in Arizona that carries capital punishment, which is why the defense must begin immediately.
Penalty Ranges at a Glance
General guidance only; your exposure depends on the facts, your record, and the dangerous-offense allegation.
The Dangerous-Offense Allegation (A.R.S. 13-704)
This is the single biggest factor in most violent-crime sentences.
First-degree murder is a capital offense, the only one in Arizona, so the defense begins immediately with the aggravating factors that make it death-eligible.
The dangerous-offense allegation is the single biggest driver of the sentence, see how it works on our Phoenix violent crimes hub. Striking or avoiding it can be the difference between probation and years in prison.
How the State Builds a First-Degree Murder Case
Knowing how the State will try to prove it is the first step in dismantling it.
Understanding how the State will try to prove a first-degree murder case is the first step in taking it apart. Built on forensics, digital evidence, witnesses, and the theory of premeditation, all of which we attack. The evidence usually falls into a few categories, and each has weaknesses:
- Witness accounts, often biased, intoxicated, or mistaken about who the aggressor was.
- Video & digital evidence, surveillance, cell-phone, and social-media footage, which frequently helps the defense.
- Forensics, DNA, injuries, autopsy, and crime-scene evidence, which prove less than juries assume.
- Your statements, anything police pulled from you, which may be suppressible.
How We Defend a First-Degree Murder Charge in Phoenix
An accusation is not a conviction, and in Arizona self-defense is a complete defense.
An accusation is not a conviction. Defeating premeditation, raising self-defense, and attacking felony-murder liability, identity, and causation. In Arizona, self-defense and justification (A.R.S. 13-404/405) is a complete defense with no duty to retreat, and once raised the State must disprove it beyond a reasonable doubt. Our approach:
- Self-defense & justification, reconstructing the threat and who the real aggressor was.
- Attacking the dangerous allegation, whether a weapon was used or the injury truly serious.
- Challenging intent and causation, the line between an accident, recklessness, and a crime.
- Testing the evidence, witness bias, identification, DNA, and video.
- Suppressing unlawful statements and searches.
See how self-defense works in Arizona, and, for assault cases, how to beat an aggravated assault charge. We bring the experts, from use-of-force analysts to forensic pathologists, to dismantle the State’s case.
Where Your Case Is Heard & What To Do Now
Acting early, and saying nothing, protects your future.
A felony violent crime is prosecuted in the Maricopa County Superior Court (175 W. Madison Ave.). Violent and homicide cases are charged aggressively and move quickly, so the time to build your defense, and to lock in the self-defense narrative before witnesses drift, is now.
What To Do Right Now
- Do not talk to police. Even “telling your side” of a self-defense incident can be twisted against you, let your lawyer tell it.
- Do not discuss the case with anyone, or post about it online.
- Preserve evidence, your injuries (photograph them), the scene, video, and the names of witnesses.
- Call a violent-crime defense lawyer immediately, before charges are finalized and the dangerous allegation is locked in.
The Experts We Bring to Violent Crime Cases
Violent-crime cases are won on the forensics, the use-of-force analysis, and the real story. We bring the specialists who provide it, click any to see how.
Use-of-Force & Self-Defense Experts
Justification
Reconstruct the threat you faced and show the jury why your use of force was reasonable and justified.
Forensic Pathologists
Cause & Manner of Death
Independently review autopsy and injury findings to challenge causation and the State’s theory.
Crime-Scene Reconstructionists
What Really Happened
Rebuild the scene, trajectories, and sequence to test whether the State’s story is even possible.
DNA & Forensic Analysts
Physical Evidence
Re-examine DNA, blood, and trace evidence, and expose contamination and overstated conclusions.
Digital Forensics Examiners
Video & Phones
Analyze surveillance, cell-phone, and social-media evidence that shows who the aggressor really was.
Private Investigators
Witnesses & Motive
Find the witnesses and bias the police overlooked, and the motive behind a false or exaggerated account.
Awards & Recognition
Our recognition for Phoenix violent crime defense is independently verified, click any award to confirm it:
- National Trial Lawyers Top 100
- National Trial Lawyers Top 40 Under 40
- Elite Lawyer 2026 – Criminal Defense
- Super Lawyers – Southwest
- National College for DUI Defense (NCDD)
When you are looking for the best Phoenix violent crime lawyers, these are the independently verified credentials that matter, earned by Founding Attorney Michael Tamou and a full team of attorneys, including former prosecutors.
Phoenix First-Degree Murder FAQs
Quick answers to the questions we hear most.
What is the difference between first- and second-degree murder?
First-degree murder requires premeditation (or felony murder or a police victim); second-degree murder is a knowing or intentional killing without premeditation. The difference can mean life or death versus 10 to 25 years.
What is felony murder in Arizona?
Felony murder makes you guilty of first-degree murder if a death occurs during certain felonies (like robbery or burglary), even if you did not intend or personally cause the death. It has important defenses.
Can a first-degree murder charge be reduced?
Yes. By defeating premeditation, raising self-defense, challenging causation or identity, or attacking felony-murder liability, the charge can be reduced to a lesser homicide or dismissed.
Does Arizona still have the death penalty?
Yes. First-degree murder is the only death-eligible offense, and the State must prove statutory aggravating factors. Early, aggressive defense work is critical to taking death off the table.
Is self-defense a defense to this charge?
Very likely. Arizona’s self-defense and justification laws (A.R.S. 13-404/405) apply to violent charges, with no duty to retreat. Once raised, the State must disprove it beyond a reasonable doubt.
What is a dangerous offense?
Under A.R.S. 13-704, a felony involving a deadly weapon or serious physical injury is a dangerous offense, which triggers mandatory prison and removes probation, even for a first offense.
Will a conviction affect my gun rights?
Yes. A felony conviction results in the loss of firearm rights in Arizona, though they can sometimes be restored later. Avoiding a felony, or a dangerous designation, helps protect those rights.
Will I work with Michael Tamou or a junior associate?
Your defense is handled by a full team of experienced attorneys, not associates, including Michael Tamou. Call 623-321-4699, 24/7.
Key Takeaways
- First-Degree Murder in Arizona is charged under A.R.S. 13-1105.
- First-degree murder is a capital offense, the only one in Arizona, so the defense begins immediately with the aggravating factors that make it death-eligible.
- Self-defense and justification (A.R.S. 13-404/405) is a complete defense, with no duty to retreat.
- The dangerous-offense allegation drives mandatory prison; defeating it can restore probation.
- Say nothing to police, photograph your injuries, and call 623-321-4699, 24/7.
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.
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.






