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Homicide & Manslaughter Defense in Oklahoma

When you are facing a homicide charge, there is no room for a passive defense. Murder and manslaughter cases carry some of the most serious consequences in Oklahoma criminal law, and the investigation against you may begin long before charges are formally filed.

Manslaughter Defense A Smart Defense
Attorney Alexa Smart taking a call in the federal courthouse corridor

A Smart Defense represents clients facing homicide and manslaughter charges throughout Oklahoma. Attorney Alexa Smart personally handles your case from beginning to end, examining the State’s evidence, identifying weaknesses in its theory, and building a defense based on the specific facts of your case.

If you have been arrested, believe you are under investigation, or have been contacted by law enforcement about a death, getting an attorney involved early can make a significant difference in protecting your rights.

DEGREES OF HOMICIDE

Homicide Charges in Oklahoma

Not every case involving the death of another person is legally the same. Oklahoma recognizes different degrees and theories of homicide, and the distinction between first-degree murder, second-degree murder, and manslaughter can depend on the defendant's intent, the circumstances surrounding the death, and what the State can actually prove beyond a reasonable doubt.

DEATH DURING A FELONY

First Degree Murder in Oklahoma: Malice Aforethought

First-degree murder is a Class Y felony and is punishable by life imprisonment, life without the possibility of parole, or death.

For first-degree murder based on malice aforethought, the State must prove that a human being died, that the death was unlawful, that the defendant caused the death, and that the defendant acted with malice aforethought.

“Malice aforethought” has a specific legal meaning. It does not require hatred, spite, or ill will toward the person who died. Instead, it means a deliberate intention to take the life of a human being.

That intent must be formed before the homicidal act and must still exist when the act occurs. However, there is no required amount of time for that intent to form. The alleged intent may be formed instantly before the act.

Intent can therefore become one of the most important issues in a first-degree murder Oklahoma prosecution. What a person intended cannot simply be assumed from the fact that a death occurred. The State still has the burden of proving the required deliberate intent beyond a reasonable doubt.

Oklahoma law also recognizes transferred intent. If a person deliberately intended to kill one individual but by mistake or accident killed another, the intent may transfer from the intended victim to the person who was actually killed.

First-Degree Felony Murder

First-degree murder can also be charged under Oklahoma's felony-murder law.

Unlike first-degree murder based on malice aforethought, felony murder does not depend on proving a deliberate intention to kill the person who died. Instead, the State must prove that the death occurred as a result of an act or event happening during the commission or attempted commission of one of the felonies specifically identified by Oklahoma law.

Those underlying offenses include certain forms of rape, robbery with a dangerous weapon, kidnapping, escape from lawful custody, eluding an officer, first-degree burglary or arson, and certain serious controlled-substance offenses, including drug trafficking and manufacturing.

Importantly, the underlying felony is not simply background to the murder allegation. The State must also prove the elements of the underlying felony beyond a reasonable doubt.

That creates multiple areas for the defense to examine. If the evidence does not establish the underlying felony, the required relationship between that felony and the death, or another required element, the State may not be able to establish first-degree felony murder.

WITHOUT DELIBERATE INTENT

Second Degree Murder Defense in Oklahoma

Second-degree murder is a Class A1 felony and is punishable by 10 years to life in the custody of the Oklahoma Department of Corrections.

Oklahoma recognizes two circumstances that can constitute second-degree murder.

Second-Degree Murder by Imminently Dangerous Conduct

Second-degree murder may be charged when a defendant causes the death of another person through conduct that is imminently dangerous to another person, the conduct demonstrates a depraved mind in extreme disregard of human life, and the conduct is not done with the intention of taking the life of any particular individual.

A “depraved mind” involves acting with contemptuous and reckless disregard for, and total indifference to, the life and safety of another person.

“Imminently dangerous conduct” means conduct creating an immediate and extremely high risk of death that a reasonable person would recognize.

These requirements matter. A tragic result, reckless behavior, or conduct creating some risk of harm does not automatically satisfy the elements of second-degree murder. The State must prove the particular level of dangerousness and the required depraved state of mind beyond a reasonable doubt.

Second-Degree Felony Murder

Second-degree murder may also be charged when a homicide is perpetrated by a person engaged in the commission of a felony other than one of the underlying offenses designated for first-degree felony murder.

This distinction is important because both first- and second-degree murder can involve an underlying felony, but the particular felony involved can affect which degree of murder the State alleges.

In a second-degree felony-murder prosecution, the alleged felony can therefore become a critical part of the defense. Whether that felony occurred, whether the defendant committed it, and whether the State can prove the necessary connection between the felony and the death must all be examined.

Because Oklahoma recognizes more than one theory of second-degree murder, second degree murder defense in Oklahoma requires careful attention to the particular theory charged and every element the State must prove.

HEAT OF PASSION & PROVOCATION

First-Degree Manslaughter in Oklahoma

First-degree manslaughter is a Class A2 felony in Oklahoma, punishable by 4 years to life in the custody of the Oklahoma Department of Corrections.

Oklahoma recognizes three circumstances in which a homicide may constitute first-degree manslaughter.

Misdemeanor-Manslaughter

First-degree manslaughter may occur when a person, without a design to cause death, causes a death while engaged in the commission of a misdemeanor.

The State must prove the required connection between the underlying misdemeanor and the death. It must also prove the elements of the misdemeanor the defendant is alleged to have been committing.

That means the underlying misdemeanor itself can become an important part of the defense. The fact that a death occurred does not relieve the State of its burden to establish the offense upon which its manslaughter theory depends.

Manslaughter by Heat of Passion

First-degree manslaughter may also involve a killing committed without a design to cause death and in the heat of passion, when the death is inflicted in a cruel and unusual manner or by means of a dangerous weapon.

This theory does not apply when the homicide occurs under circumstances that make the killing excusable or justifiable.

The circumstances immediately preceding the death can therefore become extremely important. The defendant's state of mind, the alleged provocation, the manner in which the death occurred, and whether the use of force was legally justified may all affect whether the State can prove first-degree manslaughter.

Unnecessary Killing While Resisting an Attempted Crime

Oklahoma law also recognizes first-degree manslaughter when a homicide is perpetrated unnecessarily while resisting an attempt by the person killed to commit a crime, or after that attempt has failed.

This makes the circumstances surrounding the confrontation particularly important. The fact that another person allegedly attempted to commit a crime does not automatically resolve whether a resulting homicide was justified. What threat existed, when that threat existed, and whether the killing was legally necessary under the circumstances may all become significant issues in the case.

If you are facing a manslaughter charge, working with a manslaughter attorney in OKC who understands the distinctions between Oklahoma's homicide offenses can be critical to identifying weaknesses in the State's case.

THE RESIDUAL CHARGE

Second-Degree Manslaughter in Oklahoma

Second-degree manslaughter is a Class B5 felony and is punishable by 2 to 4 years in the State Penitentiary, up to one year in county jail, a fine of up to $1,000, or both fine and imprisonment.

Second-degree manslaughter applies when the killing of another person is caused by the act, procurement, or culpable negligence of another, but the circumstances do not constitute murder, first-degree manslaughter, excusable homicide, or justifiable homicide.

The distinction between criminal culpable negligence and an accident can be particularly important in these cases. A death, standing alone, does not establish criminal liability. The State still carries the burden of proving the conduct and circumstances necessary to establish second-degree manslaughter beyond a reasonable doubt.

FATAL COLLISIONS

Vehicular and DUI-Related Deaths

A fatal collision can transform a DUI or other driving investigation into an extremely serious felony prosecution.

These cases may require detailed examination of accident reconstruction, toxicology and blood evidence, causation, vehicle data, witness statements, medical evidence, and the circumstances surrounding the law-enforcement investigation.

If alcohol or drugs are alleged, the defense should not simply assume that a positive test establishes criminal responsibility for the death. How the evidence was obtained, what the test actually establishes, the reliability of the testing, and whether the alleged impairment actually caused the collision can all become important issues.

WHAT'S AT STAKE

Penalties for Murder and Manslaughter in Oklahoma

The consequences of a homicide conviction in Oklahoma are among the most severe available under state law.

First and second-degree murder, along with first-degree manslaughter, are 85% crimes in Oklahoma. This means that a person convicted of one of these crimes is ineligible for consideration for parole until at least 85% of the person’s sentence is served. For example, if you are convicted for first-degree murder and you are sentenced to life in prison, you will not become eligible for parole or to begin earning good-time credits until you have served 38.25 years in prison (life is calculated at 45 years for purposes of parole).

First-degree murder is a Class Y felony and is punishable by life imprisonment, life without the possibility of parole, or death.

Second-degree murder is a Class A1 felony and is punishable by 10 years to life in the custody of the Oklahoma Department of Corrections.

First-degree manslaughter is a Class A2 felony and is punishable by 4 years to life in the custody of the Oklahoma Department of Corrections.

Second-degree manslaughter is a Class B5 felony and is punishable by 2 to 4 years in the State Penitentiary, up to one year in county jail, a fine of up to $1,000, or both fine and imprisonment.

The potential sentence is only one part of what is at stake. A homicide conviction can also have lasting consequences involving firearm rights, employment, professional licensing, immigration status, and reputation.

If you need a homicide defense attorney in Oklahoma or a murder defense lawyer in Oklahoma City, contact A Smart Defense to speak directly with Alexa about your case.

Contact A Smart Defense to speak directly with Alexa about your case.

AGGRAVATING FACTORS

What Can Make a Homicide Case More Serious?

The circumstances surrounding an alleged homicide matter. Factors that may substantially affect how a case is investigated, charged, or prosecuted can include:

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    Allegations of deliberate intent to kill;
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    The alleged use of a firearm or other weapon;
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    The age or status of the alleged victim;
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    Allegations that another felony was being committed;
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    Prior criminal history;
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    Attempts to conceal or destroy evidence;
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    Allegations of witness intimidation;
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    Statements allegedly made before or after the death;
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    Multiple alleged victims; and,
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    The particular circumstances surrounding the death.

The presence of an aggravating allegation does not mean the State can prove it. Every allegation still has to be supported by admissible evidence.

Why Immediate Representation Matters in a Homicide Case

Homicide investigations move quickly.

Police may be interviewing witnesses, executing search warrants, collecting phones and electronic data, obtaining surveillance footage, processing physical evidence, and attempting to question suspects within hours of a death.

Meanwhile, evidence that helps the defense can disappear.

Surveillance footage can be overwritten. Witnesses' memories can change. Physical evidence can be lost. Social-media content can disappear. People who were initially willing to speak may become difficult to locate.

Early representation allows the defense to begin protecting your rights and investigating the case while evidence is still fresh.

If detectives want to “hear your side,” remember that their job is to investigate the case. You should not attempt to talk your way out of a homicide investigation without first speaking with an attorney.

Recent Outcomes

A Smart Defense has worked on numerous homicide cases throughout Oklahoma. Every case is different and requires a deep dive into every piece of evidence. No outcome is guaranteed; however, A Smart Defense’s results speak for themselves.

In 2024, a man was charged with second-degree murder, first-degree manslaughter, desecration of a human corpse, conspiracy to commit a felony, and engaging in a pattern of criminal offenses. His case ended with both the second-degree murder and the first-degree manslaughter charges being dismissed. He only had to serve 5 years in prison under an agreed plea deal and will be released back to his family.

In 2024, a doctor was charged with second-degree murder and second-degree manslaughter. Both counts were dismissed by the District Court. The State appealed to the Oklahoma Court of Criminal Appeals. That Court sustained the dismissal of the second-degree murder charge and remanded the case to be heard by a jury on only the second-degree manslaughter charge. The client went from facing a possible life sentence to only risking up to four years. The case is ongoing since the appeal was finalized.

DEFENSE STRATEGY

Defending Murder and Manslaughter Charges

There is no universal “homicide defense.” The right strategy depends on what happened, what the State alleges happened, and what the evidence can actually prove.

Self-Defense and Justifiable Homicide

Some deaths occur when a person believes deadly force is necessary to protect themselves or another person. Oklahoma law recognizes circumstances in which the use of deadly force may be legally justified.

A self-defense case requires much more than simply saying, “I was defending myself.” The events leading up to the encounter, threats, injuries, witness accounts, physical evidence, video, weapons, and the positions and actions of the people involved can all become important.

Challenging Intent and the Degree of the Charge

The defendant's state of mind can be one of the most important issues separating one homicide offense from another.

For first-degree murder with malice aforethought, the State must prove a deliberate intention to take a human life. Second-degree murder by imminently dangerous conduct, by contrast, requires a depraved state of mind while also requiring that the conduct was not done with the intention of taking the life of any particular individual.

First-degree manslaughter presents still different theories, including misdemeanor-manslaughter, heat-of-passion manslaughter, and an unnecessary killing while resisting an attempted crime or after that attempt has failed.

These are materially different theories of criminal liability.

The prosecution's decision to charge someone with murder does not establish that murder occurred. Examining the evidence concerning intent, state of mind, the events immediately preceding the death, and what actually happened can be essential to determining whether the State can prove the offense it charged.

Challenging the Underlying Offense

Several homicide theories depend upon proving another criminal offense.

First-degree felony murder requires one of the specifically identified qualifying felonies. Second-degree felony murder involves other felonies. Misdemeanor-manslaughter depends upon proof of an underlying misdemeanor.

The State's ability to prove that underlying offense can therefore become central to the homicide case itself.

Insufficient Evidence and Reasonable Doubt

The State carries the burden of proving every element of the charged offense beyond a reasonable doubt.

Homicide cases can generate enormous investigative files, but the amount of evidence is not necessarily the same thing as the strength of the evidence.

The defense must determine what each piece of evidence actually establishes, what it does not establish, whether witnesses are reliable, whether evidence was lawfully obtained, and where investigators or prosecutors may have substituted assumptions for proof.

Eyewitness Identification and Witness Credibility

Witnesses can be wrong.

Stress, darkness, distance, intoxication, rapidly unfolding events, prior relationships, bias, inconsistent statements, and the manner in which law enforcement conducts an identification can all affect the reliability of eyewitness testimony.

Statements made immediately after an incident should also be carefully compared with later interviews and testimony.

Forensic Evidence

DNA, fingerprints, firearms evidence, autopsy findings, toxicology, cell-phone data, surveillance footage, digital records, and other forensic evidence can become central to a homicide prosecution.

Scientific evidence should be examined, not simply accepted because the State labels it “forensic.” The defense may need to scrutinize how evidence was collected, preserved, tested, interpreted, and ultimately presented.

Statements to Law Enforcement

What happens during an interrogation can become a major issue in a homicide case.

The defense should examine whether constitutional requirements were followed, whether statements were voluntary, whether improper interrogation techniques were used, and whether the accused person's words are being presented in their full context.

WORKING WITH ALEXA SMART

Your Attorney, Not a Case Manager

When you hire A Smart Defense, you hire your attorney — not a case manager, not a junior associate, and not someone you have never met. Alexa Smart handles the legal work on every case herself: reviewing the evidence, building the strategy, and making the calls that matter, from the initial consultation through resolution.

Criminal charges are personal. Your defense should be too.

AGGRAVATED DUI FAQS

Frequently Asked Questions About Homicide and Manslaughter in Oklahoma

What is the difference between first-degree and second-degree murder in Oklahoma?

The difference depends on the theory alleged by the State.

First-degree murder with malice aforethought requires a deliberate intention to take a human life. First-degree felony murder instead involves a death occurring in connection with certain specifically identified underlying felonies.

Second-degree murder can involve either imminently dangerous conduct demonstrating a depraved mind without an intention to take the life of a particular individual, or a death perpetrated while the defendant is engaged in a felony other than those designated for first-degree felony murder.

What does “malice aforethought” mean?

Malice aforethought does not mean hatred, spite, or ill will.

For purposes of first-degree murder, it means a deliberate intention to take the life of a human being. That intent must exist before and at the time of the homicidal act, but it does not have to exist for any particular length of time. The intent may be formed instantly before the act.

What is the difference between murder and manslaughter?

There is no single distinction that applies to every murder and manslaughter charge.

First-degree murder may involve malice aforethought or felony murder. Second-degree murder may involve imminently dangerous conduct demonstrating a depraved mind or certain felony-murder circumstances. First-degree manslaughter includes three separate statutory theories, while second-degree manslaughter can involve culpable negligence.

The particular offense therefore depends on the defendant's alleged conduct, state of mind, circumstances surrounding the death, and the elements the State can actually prove.

What is heat-of-passion manslaughter in Oklahoma?

First-degree manslaughter may be charged when a death is caused without a design to effect death, while the defendant is acting in the heat of passion, and the death is inflicted in a cruel and unusual manner or by means of a dangerous weapon.

The homicide must also occur under circumstances that are neither excusable nor justifiable.

What is the punishment for first-degree manslaughter in Oklahoma?

First-degree manslaughter is a Class A2 felony punishable by 4 years to life in the custody of the Oklahoma Department of Corrections.

What is the punishment for second-degree murder in Oklahoma?

Second-degree murder is a Class A1 felony punishable by 10 years to life in the custody of the Oklahoma Department of Corrections.

Can self-defense be used as a defense to a murder charge?

Yes. Oklahoma law recognizes circumstances in which homicide may be justified through lawful self-defense or defense of another person.

Whether deadly force was legally justified depends heavily on the facts, making evidence about what happened before and during the confrontation particularly important.

Can a murder charge be reduced to manslaughter?

Potentially. Whether the evidence supports murder, manslaughter, another offense, or no criminal homicide at all depends on the facts and the elements the State can prove.

In an appropriate case, challenging the prosecution's evidence concerning intent, state of mind, justification, or the circumstances of the killing can affect the appropriate charge.

What should I do if detectives want to question me about a homicide?

Do not assume that explaining yourself will make the investigation go away.

You should speak with a criminal defense attorney before answering substantive questions about a homicide investigation. Even statements that seem harmless when made can later become part of the prosecution's case.

Remember, you will never talk your way out of an investigation or help yourself by giving your side of the story. Everything you say will be used against you to fit the investigation’s narrative. Decline all conversations with law enforcement and get an experienced attorney involved immediately.

What should I do if a family member has been arrested for homicide?

Contact a defense attorney as quickly as possible and tell your family member not to discuss the facts of the case with other people.

That includes conversations from jail. Calls and other communications from detention facilities may be recorded or monitored. The safest place to discuss the facts of the case is privately with the person's attorney.

Homicide & Manslaughter Defense Throughout Oklahoma

A Smart Defense represents clients facing homicide and manslaughter charges throughout Oklahoma, including Oklahoma City, Edmond, Norman, Moore, Midwest City, and surrounding communities.

A Smart Defense works statewide on all homicide cases.