The Minnesota Bureau of Criminal Apprehension ordered law enforcement agencies across the state to suspend the use of the Data Master breathalyzer test until the machines were inspected.
The requirement issued Friday, Oct. 10, follows the discovery of multiple data entry errors related to the dry gas cylinders used in the machines, according to a news release.
This follows reporting by the Minnesota Star Tribune that found that hundreds of tests may have been compromised due to this error, including in Aitkin County.
In a Monday press conference, BCA Superintendent Drew Evans said the action was out of an abundance of caution.
"This is a bit nuanced and technical," he said. "It doesn't necessarily mean, even if there were errors, that the test results themselves were not reliable."
Each instrument is assigned a uniquely numbered dry gas cylinder with a known alcohol concentration, serving as a control during every test to ensure the instrument is measuring alcohol accurately, according to the BCA.
One driving while intoxicated case in Aitkin County was dismissed and others may be challenged due to the error.
"The BCA is dedicated to partnering with Minnesota law enforcement agencies to keep Minnesota roads safe from impaired drivers," stated the Friday release.
"As part of that effort, the BCA will continue providing the training and information necessary to ensure the accuracy and reliability of all breath testing in Minnesota."
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