MISSOULA — Colton Jesse Nielson of Darby was arrested this week for the death of his 8-month-old baby, which happened in March of 2025.
Nielson, 27 years old, is facing a charge of negligent homicide, as well as several drug charges.
Court documents allege that Nielson's baby died after falling between a couch and an air mattress while Nielson was asleep.
Officers also found drugs and paraphernalia in the "unclean and disorganized" home.
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Toxicology results showed that there was methamphetamine in Nielson's system.
Nielson's next court date is scheduled for September.
