Montana Mother Charged With Homicide After 5-Year-Old Son Found Dead

Kathryn Lesal Garaas appeared in Jefferson County Justice Court in Boulder and was held on a $5 million bond after prosecutors charged her with deliberate homicide in the death of her 5-year-old son, Reign. The charge now drives the case in a way that a medical emergency never could, and in Montana it carries the state’s harshest penalties, including death, life imprisonment, or 10 to 100 years behind bars.

The boy died Friday, April 24, 2026, at a residence north of Whitehall after first responders were called to what was initially reported as a medical emergency. Jefferson Valley EMS responded along with deputies from the Jefferson County Sheriff’s Office and the Madison County Sheriff’s Office, but the child did not survive despite medical aid. Garaas was later booked into the Jefferson County Detention Center in Boulder.

Booking records from the Broadwater County Sheriff’s Office list Garaas as 40 years old with a Whitehall, Montana address and note Jefferson County as the arresting agency. The Jefferson County Sheriff’s Office said the Montana Department of Justice Division of Criminal Investigation has taken over the case, a move that is standard when local agencies seek outside help in a major-crime investigation. The state justice department says DCI commonly assists city, county, state and federal agencies when primary investigators request that support.

The timeline took on added urgency when the boy’s father called 911 after receiving a disturbing text message from Garaas. That call came before the full scope of the situation was clear, and it now sits at the center of the sequence that led to the child’s death and Garaas’s arrest.

A later update identified the child in a GoFundMe as Reign Tyler Blair and described Garaas as his biological mother. That same update said deputies believe there is no threat to the public. In a town like Whitehall, where violent crime is rare, the case landed with immediate force, but the legal process now moves into its next phase: the homicide case, the state-led investigation, and the court proceedings that will determine what happened inside that home north of Whitehall.