11-Year-Old Charged in Death of 5-Year-Old Brother

Colorado child is being held on murder count after incident in Centennial home

Mar. 15, 2026 at 8:14pm

An 11-year-old boy in suburban Denver faces a first-degree murder charge, accused of killing his 5-year-old brother. Deputies were called Tuesday evening to a home in Centennial where the younger child was found dead, and the death is being investigated as a homicide, though officials have not released a cause of death or other details.

Why it matters

This tragic incident raises questions about child mental health, family dynamics, and the criminal justice system's approach to minors accused of serious crimes.

The details

The older brother is being held at a juvenile facility, and prosecutors are expected to file formal charges next week. Under Colorado law, children 10 and older can face charges in juvenile court; those 12 and up can, in serious cases, be prosecuted as adults.

  • On Tuesday evening, deputies were called to a home in Centennial, Colorado.
  • Prosecutors are expected to file formal charges against the 11-year-old next week.

The players

11-year-old boy

The older brother who is being held on a first-degree murder charge for the death of his 5-year-old brother.

5-year-old boy

The younger brother who was found dead in the Centennial home.

Arapahoe County Sheriff's Office

The law enforcement agency investigating the homicide incident.

18th Judicial District Attorney's Office

The prosecutors who are expected to file formal charges against the 11-year-old next week.

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What they’re saying

“The little boy was so sweet. One of those people you just want to hug and help.”

— Neighbor

What’s next

The judge will decide next week whether to file formal charges against the 11-year-old in juvenile court.

The takeaway

This tragic case highlights the complexities of the criminal justice system's approach to minors accused of serious crimes, as well as the need for greater investment in child mental health resources and family support services.