If you or someone in your family is facing a murder or attempted murder charge in Southwest Riverside County, the case will be filed at the Southwest Justice Center and prosecuted by the Riverside County District Attorney’s office — and these are the most serious charges California recognizes. They are also more legally complex than most people expect: what separates murder from manslaughter, first degree from second, and who can even be held responsible for a killing all turn on details that a Murrieta murder attorney has to work through carefully from the very start. Getting those distinctions right is often the difference between a life sentence and something far less.
Our office has defended serious violent crime charges at the Southwest Justice Center for more than 25 years, for clients across Murrieta, Temecula, Menifee, Lake Elsinore, Wildomar, Winchester, Canyon Lake, and French Valley. This explains how California defines murder, how the degrees and penalties actually work, the major 2019 change to the felony-murder rule that a lot of older information online still gets wrong, and the defenses that matter.
What Makes a Killing “Murder” in California
Under Penal Code § 187, murder is the unlawful killing of another person with malice aforethought. That phrase — malice — is the element that defines the crime, and it comes in two forms:
- Express malice — an intent to kill.
- Implied malice — no specific intent to kill, but an intentional act dangerous to human life, done with conscious disregard for that danger.
Malice is also what separates murder from manslaughter. A killing without malice is not murder at all; it’s manslaughter (discussed below). So the first thing we look at in a homicide case is whether the prosecution can actually prove malice — because if it can’t, the charge isn’t murder, no matter how serious the outcome.
One important modern point: California law no longer allows malice to be “imputed” to someone based solely on their participation in a crime. That change, from 2019, reshaped who can be convicted of murder at all, and it’s covered below.
First-Degree vs. Second-Degree Murder
California recognizes only two degrees of murder, defined by Penal Code § 189.
First-degree murder covers killings that are willful, deliberate, and premeditated — meaning the killing was thought through beforehand, even if only briefly. (Premeditation does not require days or weeks of planning, but the prosecution does have to prove the killing was considered rather than impulsive, and that is often hard to establish.) First-degree murder also includes killings by specific means the statute singles out — such as lying in wait, poison, torture, or a destructive device — and first-degree felony murder, explained in the next section.
Second-degree murder is any murder that isn’t first degree: an unlawful killing committed with malice, but without the premeditation and deliberation that elevate it to first degree. The legacy information on this topic often describes second-degree murder only through a garbled felony-murder example; in reality, the core of second-degree murder is malice without premeditation.
The line between the two degrees frequently comes down to premeditation, and that is one of the most contested issues in these cases — because reducing a first-degree charge to second degree meaningfully changes the sentence.
How SB 1437 Changed the Felony-Murder Rule
This is the area where older articles — including the prior version of this page — are now simply out of date, and the change is significant.
Historically, California’s felony-murder rule was sweeping: if someone died during the commission of a felony, participants could be convicted of murder even if they didn’t kill anyone, didn’t intend for anyone to die, and weren’t even present at the killing. Senate Bill 1437, effective in 2019, ended that. Under the current law, a person can be convicted of felony murder only if one of the following is true:
- They were the actual killer;
- They were not the killer but, with intent to kill, aided and abetted the actual killer; or
- They were a major participant in the underlying felony and acted with reckless indifference to human life.
(A narrow exception applies where the victim was a peace officer killed in the line of duty.) The same reform also eliminated the “natural and probable consequences” theory as a basis for a murder conviction. And it applies retroactively — people convicted under the old rule can petition to be resentenced if they wouldn’t be guilty of murder under the new standard.
In the felony-murder and accomplice cases we handle, this framework is frequently the heart of the defense. Whether a client was the actual killer, intended a killing, or was a major participant who acted with reckless indifference is exactly the kind of question SB 1437 put back in play — and it can be the difference between a murder conviction and no murder liability at all. First-degree felony murder still attaches to killings during serious felonies like robbery, burglary, arson, carjacking, kidnapping, and certain others — but only for people who fit one of the three categories above.
Penalties — and Where the Death Penalty Actually Stands
The sentences for murder are among the most severe in California law:
- First-degree murder: 25 years to life in state prison.
- First-degree murder with special circumstances: a specific list of aggravating facts (for example, killing for financial gain, killing a witness, multiple murders, or a killing tied to certain felonies) that raises the penalty to life without the possibility of parole, or the death penalty.
- Second-degree murder: 15 years to life; certain prior convictions or circumstances can raise that.
Two practical points are worth being precise about, because the legacy page wasn’t. First, the death penalty is not a general consequence of first-degree murder — it applies only when special circumstances are charged and proven. Second, although capital punishment technically remains on the books, California has had a moratorium on executions since 2019, and no execution has been carried out in the state in roughly two decades. In practical terms, the operative maximum in these cases is life without parole.
On top of the base sentence, firearm-use enhancements can add substantial additional time, and a murder conviction is a strike under California’s Three Strikes law with lifelong consequences.
Attempted Murder (Penal Code § 664/187)
Attempted murder is a separate charge, and it requires more than murder does in one respect: intent. To convict, the prosecution must prove the defendant took a direct step toward killing someone with the specific intent to kill. Implied malice is not enough for attempted murder — there has to be an actual intent to kill.
The penalty depends on premeditation:
- Premeditated attempted murder — life in prison with the possibility of parole.
- Attempted murder that was not premeditated — 5, 7, or 9 years in state prison.
Like murder, attempted murder is a strike, and firearm and great-bodily-injury enhancements can add significant time. Because intent to kill is the central element, the defense often focuses on whether the evidence truly shows an intent to kill as opposed to an intent to frighten, injure, or something less.
Manslaughter: The Lesser Homicide That Isn’t Murder
A common misconception — repeated in a lot of older material — is that manslaughter is a “type” of murder. It isn’t. Manslaughter under Penal Code § 192 is a distinct, less serious homicide, and the difference is precisely the absence of malice:
- Voluntary manslaughter — a killing in the heat of a sudden quarrel or intense passion, or under an honest but unreasonable belief in the need for self-defense (“imperfect self-defense”). Punishable by 3, 6, or 11 years.
- Involuntary manslaughter — a killing without malice during a non-felony unlawful act, or a lawful act done without due caution. Punishable by 2, 3, or 4 years.
Manslaughter matters enormously in murder defense, because reducing a murder charge to manslaughter — by negating malice, or by establishing heat of passion or imperfect self-defense — can take a life sentence off the table entirely. It is one of the most important outcomes a defense can pursue.
Defenses to Murder and Attempted Murder Charges
The right defense depends on the facts, but several recur in the homicide cases we handle:
- Self-defense or defense of others. A killing genuinely necessary to defend against an imminent threat of death or great bodily injury is justifiable homicide — a complete defense.
- Imperfect self-defense. An honest but unreasonable belief in the need to defend yourself doesn’t fully excuse the killing, but it negates malice and reduces murder to voluntary manslaughter.
- Heat of passion. Adequate provocation that would cause a reasonable person to act rashly can likewise reduce murder to voluntary manslaughter.
- No malice or no intent to kill. Because malice (for murder) and intent to kill (for attempted murder) are required elements, evidence of accident, lack of intent, or a different mental state can defeat or reduce the charge.
- SB 1437 — not the killer. In felony-murder and accomplice cases, showing that the client was not the actual killer, did not intend a killing, and was not a major participant acting with reckless indifference can defeat murder liability altogether.
- Mistaken identity, alibi, and insufficient evidence. Homicide cases often rest on contested identifications, circumstantial proof, and forensic evidence that can be challenged.
When we review a murder case, we look first at malice, intent, and self-defense — because those three issues determine not only whether the charge is murder at all, but whether it can be reduced to something a person can survive.
Where a Homicide Case Is Heard — and Why a Murrieta Murder Attorney Matters Early
A murder or attempted murder charge arising in Murrieta, Temecula, Menifee, Lake Elsinore, Wildomar, Winchester, Canyon Lake, or French Valley is handled at the Southwest Justice Center, the branch of the Riverside County Superior Court in Murrieta, and prosecuted by the Riverside County District Attorney’s office. In the most serious cases, the decision whether to pursue special circumstances — and everything that follows from it — is made by those local prosecutors. Attorney Nic Cocis has appeared at the Southwest Justice Center on a near-weekly basis since 1999.
Homicide cases are shaped from the very first days. Whether the prosecution can prove malice and premeditation, whether SB 1437 limits liability, whether self-defense or heat of passion applies, and whether special circumstances are realistic on the facts are all questions that need to be assessed immediately — and what a person says to investigators in those early days can affect everything that follows. These are the questions a Murrieta murder attorney who knows the Southwest Justice Center should be working through with you from the start, not at trial.
The Law Office of Nic Cocis defends murder and attempted murder charges at the Southwest Justice Center, for clients throughout Murrieta, Temecula, Menifee, Lake Elsinore, Wildomar, Winchester, Canyon Lake, and French Valley. Our case results page shows how cases like this are handled.
If you or a loved one has been arrested or charged with murder or attempted murder, call the Law Office of Nic Cocis at (951) 400-4357 for a free, confidential consultation.
