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Minnesota suspends DWI breath tests due to calibration errors affecting hundreds of cases.
The Minnesota Bureau of Criminal Apprehension has ordered a statewide inspection of DWI breath testing equipment after data entry errors were found in DataMaster (DMT) machines, affecting up to 108 cases in Olmsted County and 38 in Hennepin County, with earlier issues in Aitkin, Winona, and Chippewa counties.
The errors involved incorrect installation or logging of dry gas cylinders used to calibrate alcohol measurements, potentially compromising test results.
The BCA has suspended all DMT use until data is verified and will now handle all cylinder replacements and maintenance to prevent human error.
Winona County is dismissing pending cases and reviewing past convictions linked to the flawed data.
The BCA emphasized its commitment to forensic accuracy and ongoing collaboration with law enforcement to ensure reliable testing.
Minnesota suspende las pruebas de aliento DWI debido a los errores de calibración que afectan a cientos de casos.