Third-degree murder is a homicide charge used in only three states — Florida, Minnesota, and Pennsylvania — for killings committed without any intent to kill, but under circumstances more serious than ordinary negligence. It sits below first- and second-degree murder in severity and above manslaughter, and each of the three states defines it differently. What qualifies in Pennsylvania may not qualify in Florida, and most states don’t use the charge at all.
The one element every version shares is the absence of intent to kill. First-degree murder requires a deliberate plan. Second-degree murder usually requires an intent to kill or to cause serious bodily harm, just without premeditation. Third-degree murder fills the gap between those intentional killings and the lesser charge of manslaughter, covering conduct that is reckless, malicious, or tied to another crime, but not aimed at causing death.
How Each State Defines It
Minnesota
Minnesota’s statute has two separate paths to a third-degree murder conviction. The first covers anyone who causes a death through extremely dangerous conduct showing a “depraved mind” and total disregard for human life, without intending to kill. Firing a weapon into an occupied building would be a classic example. The conduct has to be so reckless that it goes beyond carelessness and reflects indifference about whether people live or die.1Minnesota Office of the Revisor of Statutes. Minnesota Statutes Section 609.195 – Murder In The Third Degree
The second path targets drug distribution. If someone unlawfully provides a Schedule I or Schedule II controlled substance to another person and that person dies as a result, the distributor can be charged with third-degree murder even without any intent to cause harm. The key element is that the drug delivery was the direct cause of death. Prosecutors have increasingly used this provision in overdose cases.1Minnesota Office of the Revisor of Statutes. Minnesota Statutes Section 609.195 – Murder In The Third Degree
Florida
Florida takes a different approach. Its third-degree murder charge applies when someone unintentionally kills another person while committing or attempting a felony that is not on the list of serious felonies that would push the charge up to first- or second-degree murder. The statute excludes arson, robbery, burglary, kidnapping, sexual battery, carjacking, and several others from third-degree treatment.2Florida Senate. Florida Code 782.04 – Murder
So a death during one of those excluded violent felonies becomes first- or second-degree murder. A death during some other felony not on the list drops to third-degree. Florida also includes a drug distribution provision similar to Minnesota’s, covering deaths caused by unlawful distribution of certain controlled substances by someone 18 or older.2Florida Senate. Florida Code 782.04 – Murder
Pennsylvania
Pennsylvania’s approach is the broadest. Third-degree murder covers “all other kinds of murder” that don’t qualify as first-degree (intentional killing) or second-degree (killing during the commission of a felony). The prosecution must prove malice, but doesn’t need to show a specific intent to kill or a connection to another felony.3Pennsylvania General Assembly. Pennsylvania Code 18 – Crimes and Offenses, Chapter 25
The malice requirement is what separates Pennsylvania’s third-degree murder from manslaughter. Courts have interpreted it as requiring callous disregard for human life, sometimes described as a “wickedness of disposition” that goes beyond ordinary recklessness. Someone acting with extreme indifference to whether their conduct might kill, but without any plan to cause death, fits here.
Penalties by State
Maximum sentences vary widely. Actual prison time depends on sentencing guidelines, criminal history, and the facts of the case.
- Minnesota: Up to 25 years in prison. The drug-related form of the charge can also carry a fine of up to $40,000.1Minnesota Office of the Revisor of Statutes. Minnesota Statutes Section 609.195 – Murder In The Third Degree
- Florida: Up to 15 years in prison, classified as a second-degree felony.2Florida Senate. Florida Code 782.04 – Murder
- Pennsylvania: Up to 40 years in prison, classified as a first-degree felony.4Pennsylvania General Assembly. Pennsylvania Code Title 18, Chapter 11 – Sentence for Murder
Pennsylvania’s 40-year maximum is one of the heaviest penalties for third-degree murder in the country, which tracks with how broadly the charge is defined there. Florida’s 15-year ceiling is the lowest, consistent with its narrower definition tied to non-enumerated felonies.
How It Differs From Related Charges
Second-Degree Murder
The line between second- and third-degree murder depends on which state you’re in, but the general principle is intent. Second-degree murder usually requires either an intent to kill (without premeditation) or conduct amounting to “depraved indifference” to human life. In Pennsylvania, the split is cleanest: second-degree is reserved for killings during a felony, while third-degree covers everything else involving malice. In Minnesota, second-degree requires intent to kill without premeditation, while third-degree requires no intent to kill at all, just extremely dangerous conduct and a depraved mind.1Minnesota Office of the Revisor of Statutes. Minnesota Statutes Section 609.195 – Murder In The Third Degree
Manslaughter
Manslaughter sits below third-degree murder. Voluntary manslaughter involves an intentional killing in the heat of passion after adequate provocation; third-degree murder lacks that provocation element. Involuntary manslaughter involves an unintentional killing caused by criminal negligence or recklessness. The difference from third-degree murder comes down to degree. Involuntary manslaughter requires recklessness; third-degree murder requires a higher level that courts describe as “depraved” or showing “extreme indifference” to human life. Drawing that line in an actual case is where most trials are fought.
Common Defenses
Defense strategy almost always targets the mental state element, because that’s what separates the charge from manslaughter. The prosecution has to prove more than ordinary carelessness, so the defense often works to knock the conduct down from “depraved indifference” to plain recklessness, which would support a lesser charge.
In depraved-mind cases, defense attorneys argue that the conduct, while dangerous, didn’t rise to extreme indifference. The gap between a “substantial” risk of death and utter disregard for human life is genuinely blurry, and reasonable juries can disagree about where a given case falls.
Self-defense and imperfect self-defense also come up. If the defendant genuinely believed they faced an imminent threat but that belief was unreasonable, some jurisdictions allow a reduction from murder to manslaughter on the theory that the killing lacked malice. That doesn’t produce an acquittal, but it can cut the sentence sharply.
In Minnesota drug-delivery cases, the defense often challenges causation. If the victim combined multiple drugs, had a pre-existing medical condition, or obtained the lethal substance from someone else, the causal link between the defendant’s conduct and the death may not hold.
If You’re Not in Florida, Minnesota, or Pennsylvania
Most states don’t have a third-degree murder charge. The underlying conduct still gets prosecuted, just under a different label. An unintentional killing caused by extreme recklessness is typically charged as second-degree murder (often called “depraved heart” or “depraved indifference” murder) or as involuntary manslaughter, depending on how reckless the conduct was. Deaths during a felony are prosecuted under felony murder rules, usually as first- or second-degree murder depending on the underlying crime. Drug-delivery deaths are handled through specific drug-induced homicide statutes in some states and as involuntary manslaughter in others.