Blue Earth County, MN – Officials are reviewing more than 160 breath alcohol tests after a potential setup error was discovered in a device used for impaired driving investigations at the Blue Earth County Justice Center.
According to the Blue Earth County Sheriff’s Office, the Minnesota Bureau of Criminal Apprehension (BCA) notified local authorities on October 16, 2025, of a possible issue involving the DataMaster DMT, a device used to measure alcohol concentration levels for law enforcement evidence.
The problem reportedly stems from incorrect numeric entries made by a Sheriff’s Office employee during the device’s setup on October 17, 2024. While the issue has since been corrected, officials say 161 tests conducted between October 17, 2024, and May 5, 2025, are now under review to determine whether results were affected.
Agencies involved in the review include the Blue Earth County Sheriff’s Office, Mankato Department of Public Safety, Minnesota State Patrol, Lake Crystal Police Department, and Mapleton Police Department.
Authorities emphasized that the DataMaster DMT remains a trusted evidentiary device, and additional guidance is expected once the review is complete.
Individuals who believe they may have been tested during the affected period are encouraged to contact their attorney for advice or clarification.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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