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Difference Between Murder and Homicide in California

Posted by Sam Israels | Apr 13, 2026

In California criminal law, the terms “murder” and “homicide” are often confused, but they are not the same. This distinction is critical because it can determine whether a killing is treated as a serious felony offense or not a crime at all.

Difference Between Murder and Homicide in California

Understanding how the law defines and separates these concepts can make a significant difference in how a case is charged, defended, and ultimately resolved.

Under California Penal Code 187, homicide is a broad legal term that simply refers to one person causing the death of another. Murder, on the other hand, is a specific type of unlawful homicide that involves intent or extreme recklessness. 

Other forms of homicide, such as manslaughter or justifiable self-defense, may carry very different legal consequences.

Whether you are trying to understand your rights, facing an investigation, or researching California criminal law, knowing the difference between murder and homicide is essential.

The sections below break down these definitions, provide real-world examples, and explain how prosecutors decide which charges to file.

The dedicated criminal defense attorneys at Cron, Israels & Stark, based in Los Angeles, are ready to assist you. Feel free to schedule your consultation by filling out the contact form or giving us a call at (424) 372-3112. We're here to support you every step of the way.  


What Is Homicide Under California Law?

Under California Penal Code 187, homicide is defined as the killing of one human being by another. This broad legal category encompasses both criminal and non-criminal acts, making it one of the most misunderstood terms in California law.

The key point is that homicide itself is not automatically illegal. Instead, it serves as an umbrella term that covers all situations where a person causes the death of another, regardless of intent or circumstances.

Types of homicide recognized in California

Homicide can fall into several categories, depending on the facts of the case:

  • lawful homicide, such as self-defense or defense of others
  • excusable homicide, including accidental deaths without criminal negligence
  • criminal homicide, which includes murder and manslaughter

What distinguishes criminal from non-criminal homicide

The difference comes down to factors like intent, negligence, and justification. A killing may be considered criminal if it involves:

  • intent to kill or harm
  • reckless disregard for human life
  • criminal negligence

On the other hand, a homicide may not be charged as a crime if it was legally justified or occurred under circumstances recognized as excusable under California law.

Why this definition matters

Understanding the legal meaning of homicide is critical because it is the starting point for all serious violent crime charges involving death.

From there, prosecutors determine whether the facts support more specific charges such as murder or manslaughter, or whether no criminal charges should be filed at all.

In short, homicide describes what happened, while the surrounding facts determine whether it was lawful, negligent, or a serious felony offense.


What Is Murder in California?

Murder is a specific type of unlawful homicide. Under California Penal Code 187, murder is defined as the unlawful killing of a human being with malice aforethought.

Malice aforethought” generally means:

  • intent to kill, or
  • acting with conscious disregard for human life

California law divides murder into two main categories:

First-degree murder

  • willful, deliberate, and premeditated killings
  • certain felony murders (such as during robbery or burglary)

Second-degree murder

  • intentional killings without premeditation
  • extremely reckless conduct showing disregard for life

Key Differences Between Murder and Homicide

Category Homicide Murder

Legal Meaning

Broad term for any killing

Specific criminal offense

Includes Lawful Acts

Yes

No

Requires Intent

Not always

Yes (malice required)

Criminal Liability

Not always

Always criminal

Examples

Self-defense, accidents, manslaughter

Premeditated killing, reckless killing

Examples to Understand the Difference

Example 1: Lawful homicide
A homeowner uses reasonable force to stop an intruder threatening their life. This may be considered justifiable homicide and not a crime.

Example 2: Manslaughter (criminal homicide, but not murder)
A driver causes a fatal accident due to reckless behavior, but had no intent to kill. This could be charged under California Penal Code 192 rather than murder.

Example 3: Murder
A person plans and intentionally kills another individual. This is a classic case of first-degree murder under California law.


Types of Criminal Homicide in California

When a killing is determined to be unlawful, it is classified as criminal homicide. California law recognizes several distinct categories, each defined by the level of intent, recklessness, or negligence involved. These classifications directly impact how a case is charged and the severity of the penalties.

Murder – California Penal Code 187

Murder is the most serious form of criminal homicide and involves malice aforethought. This means the person either intended to kill or acted with a conscious disregard for human life.

California divides murder into two main degrees:

  • first-degree murder, which includes premeditated and deliberate killings or felony murder
  • second-degree murder, which involves intentional or highly reckless killings without premeditation

Convictions can result in lengthy prison sentences, including life imprisonment.

Manslaughter – California Penal Code 192

Manslaughter is an unlawful killing without malice. It generally applies when the circumstances reduce the level of culpability compared to murder.

Manslaughter includes:

While still serious, manslaughter carries less severe penalties than murder.

Gross Vehicular Manslaughter While Intoxicated – California Penal Code 191.5

This offense applies when a person drives under the influence and causes a death through gross negligence. It is often charged as a felony and can result in significant prison time.

Felony Murder Rule – California Penal Code 189

Under this rule, a person can be charged with murder if a death occurs during the commission of certain serious felonies, even if there was no intent to kill. This doctrine expands liability in cases involving inherently dangerous crimes such as robbery or burglary.

Attempted Murder – California Penal Code 664/187

Although not a completed homicide, attempted murder is closely related and involves taking a direct step toward killing another person with intent to do so. It carries severe penalties, especially if the act was willful and premeditated.


Each category of criminal homicide reflects a different level of intent and responsibility. Determining which charge applies depends on the specific facts of the case, including the defendant's state of mind, actions, and surrounding circumstances.


Related California Crimes and Legal Issues

Several related offenses and legal doctrines often arise in homicide cases:

Attempted Murder – California Penal Code 664/187

Applies when someone intends to kill but the victim survives.

Felony Murder Rule – California Penal Code 189

Allows murder charges when a death occurs during certain felonies, even without intent to kill.

Gross Vehicular Manslaughter While Intoxicated – California Penal Code 191.5

Applies when a DUI results in death with gross negligence.

Justifiable Homicide – California Penal Code 197

Covers killings committed in lawful self-defense or defense of others.


Why the Difference Matters

The distinction between homicide and murder directly affects:

  • whether charges are filed at all
  • the severity of the charges
  • potential penalties, including life imprisonment
  • available legal defenses

For example, proving a killing was justified or lacked malice can mean the difference between freedom and decades in prison.


Common Legal Defenses in Homicide Cases

Homicide charges carry the most serious consequences under California law, but a charge is not the same as a conviction.

A strong legal defense focuses on challenging the prosecution's theory, disputing intent, and demonstrating that the killing does not meet the legal definition of murder or criminal homicide.

Self-Defense or Defense of Others – California Penal Code 197

One of the most powerful defenses is that the killing was legally justified. California law allows a person to use reasonable force, including deadly force, if they genuinely and reasonably believe they or someone else is in imminent danger of being killed or suffering great bodily harm. If successful, this defense can result in a full acquittal.

Lack of Malice Aforethought

Murder charges require proof of “malice aforethought.” If the defense can show there was no intent to kill and no conscious disregard for human life, the charge may be reduced from murder to manslaughter—or dismissed entirely.

Heat of Passion

A killing that occurs in the heat of passion, after a sudden provocation, may reduce a murder charge to voluntary manslaughter. This defense argues that the defendant acted emotionally rather than with premeditated intent.

Accident or Misfortune

If the death occurred as a true accident without criminal negligence, it may be considered excusable homicide. In these cases, the defense focuses on showing there was no unlawful intent or reckless behavior.

Mistaken Identity or False Accusation

In some cases, the defense may argue that the wrong person has been accused. This can involve challenging eyewitness testimony, presenting alibi evidence, or exposing flaws in the investigation.

Insufficient Evidence

The prosecution must prove every element of the offense beyond a reasonable doubt. If the evidence is weak, inconsistent, or unreliable, the defense can argue that the case does not meet the legal standard required for conviction, known as insufficient evidence.

Violation of Constitutional Rights

If law enforcement violated your constitutional rights—such as through an illegal search, coerced confession, or failure to follow proper procedures—key evidence may be excluded. This can significantly weaken the prosecution's case or lead to dismissal.

Mental State Defenses

In certain cases, a defendant's mental condition at the time of the incident may be relevant. This can include arguments that the defendant lacked the capacity to form intent or did not understand the nature of their actions.


Homicide defenses are highly fact-specific and often complex. The strategy depends on carefully analyzing the evidence, the defendant's state of mind, and the circumstances surrounding the incident. Early legal intervention is critical to preserving evidence and building the strongest possible defense.


Frequently Asked Questions

Is homicide always a crime?

No. Homicide simply means one person killed another. It can be lawful, excusable, or criminal depending on the circumstances.

What makes a killing “murder” instead of manslaughter?

The key difference is malice. Murder requires intent to kill or conscious disregard for life, while manslaughter does not.

Can you be charged with murder without intending to kill?

Yes. Under certain circumstances, such as the felony murder rule or extreme recklessness, intent to kill is not required.

What is the punishment for murder in California?

Penalties vary but can include 15 years to life, 25 years to life, or life without parole, depending on the degree and circumstances.

What should you do if you are under investigation?

Do not speak with law enforcement without legal counsel. Homicide investigations are complex and high-stakes, and early legal representation is critical.


Take Action to Protect Your Rights

If you are facing allegations involving homicide or murder in California, the stakes could not be higher. The difference between these charges can determine the course of your life.

Early legal intervention can help protect your rights, challenge the evidence, and build a strong defense strategy from the outset.

For the best possible outcome, consider partnering with an experienced California criminal defense attorney at Cron, Israels & Stark.

We're here to help—reach out to us for a consultation by calling (424) 372-3112 or simply fill out our contact form whenever you're ready. We look forward to assisting you!

 
 

About the Author

Sam Israels
Sam Israels

Sam J. Israels is a Law Firm partner with the Law Offices of Cron, Israels, & Stark. Mr. Israels received his J.D. degree from the Santa Clara University School of Law. Mr. Israels also previously worked at the Los Angeles Office of the City Attorney. He is admitted to practice law in the State o...

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