Second degree murder in Colorado

What the charge means

Prosecutors must prove that the accused knowingly caused another person's death. Knowingly means the person was aware that their conduct was practically certain to cause death. Unlike first degree murder, there is no requirement of planning or deliberation. A killing in a sudden fight, without any time for reflection, can be charged as second degree murder.

The statute also now contains Colorado's felony murder rule. Since a 2021 change in the law, a death that happens during certain dangerous felonies, such as robbery, burglary, kidnapping, arson, or sexual assault, is second degree murder even if no one intended for anyone to die. The statute provides a narrow affirmative defense for a participant who, among other things, was not armed, did not cause the death, and had no reason to believe anyone would be hurt.

Common scenarios include shootings or beatings that escalate from arguments, deaths during group crimes charged as felony murder, and cases where the real dispute is the mental state: whether the accused acted knowingly, recklessly, or in self defense. That line matters enormously, because it separates murder from manslaughter and from no crime at all.

Classification and sentencing

Second degree murder is a class 2 felony. On paper, the presumptive range for a class 2 felony under C.R.S. 18-1.3-401 is 8 to 24 years. But the statute treats second degree murder as a crime of violence, which changes everything about sentencing:

• Prison is mandatory. The court must impose a prison sentence of 16 to 48 years, followed by 5 years of mandatory parole. Probation is not an option for this charge.
• Fines. A fine of $5,000 to $1,000,000 is also possible.
• Heat of passion. If the killing happened in a sudden heat of passion, provoked by a serious and highly provoking act of the victim, the charge drops to a class 3 felony. The mandatory prison range then becomes 10 to 32 years, with 5 years of mandatory parole. If there was time for reason to return between the provocation and the killing, the charge stays a class 2 felony.

For most charges we note that prison ranges only describe what happens if the court chooses incarceration. For second degree murder that caveat does not help, because the law itself mandates prison. The ranges above are what a conviction means.

What else it touches

The consequences reach well past the prison term:

• Firearms. A felony conviction brings a lifetime firearm ban under state and federal law.
• Immigration. Murder is an aggravated felony under federal immigration law. A noncitizen faces deportation and permanent inadmissibility.
• Record sealing. Class 2 and class 3 felony convictions can never be sealed in Colorado. A case that ends in dismissal or acquittal can usually be sealed.

We defend second degree murder cases, including felony murder cases, and a consultation is the right place to get answers about a specific situation.