A Life Sentence for the Killing of 10-Year-Old Lily Peters

It was a day that brought a measure of grim finality to a heartbreaking chapter for the community of Chippewa Falls, Wisconsin. Carson Peters-Berger, just 18 years old now but only 14 at the time of the unspeakable crime, stood before Judge Steven Gibbs in Chippewa County Court this past Wednesday, August 26, 2026. He formally pleaded guilty to first-degree intentional homicide in the brutal killing of his 10-year-old cousin, Lily Peters, a crime that sent shockwaves far beyond their quiet town. The sentence handed down was stark: life in prison.

The tragedy first unfolded on a quiet Sunday, April 24, 2022, when Lily Peters, a vibrant fifth-grader from Parkview Elementary, was reported missing by her worried father. She had been on her way home, riding her bike from her aunt's house, a routine journey that somehow went horribly awry. The very next day, the search concluded in the most devastating way possible. Lily's body was discovered in a wooded area near the walking trail she would have taken, a discovery that instantly plunged the community into profound grief and fear.

As investigators pieced together the horrific events, a clearer, yet incredibly disturbing, picture emerged. It was Lily’s own cousin, Carson Peters-Berger, who lured her off the familiar path. He confessed to persuading her to explore the woods, a seemingly innocent invitation that masked a sinister intent. Autopsy results later confirmed the brutality of the attack: Lily had been beaten, strangled, and sexually assaulted. Perhaps most chillingly, Peters-Berger himself admitted to investigators that he had planned to rape and kill Lily "from the get-go," revealing a premeditated cruelty that defies comprehension. After the act, he fled, going home to shower and wash his clothes in a desperate attempt to erase his crime, only to return later to try and conceal her body more effectively.

In court, under the watchful eyes of attorneys Michael Cohen and Alicia Linzmeier representing Peters-Berger, a plea agreement was finalized. While charges of first-degree sexual assault and first-degree child sexual assault were dismissed as part of this agreement, the harrowing details of those charges were indeed read into the record, ensuring the full scope of his actions was acknowledged. Judge Gibbs, in accepting the plea, ensured justice, to the extent possible, was served for Lily and her family.

The life sentence includes eligibility for extended supervision after a minimum of 25 years, a legal provision that offers a glimmer of a future release, albeit a distant one. Furthermore, Peters-Berger was ordered to pay restitution totaling $30,197.20. For the Chippewa Falls community, while the sentencing marks an end to the legal proceedings, the memory of Lily Peters and the profound trauma inflicted by this senseless act will undoubtedly linger, a somber reminder of a young life tragically cut short.