The Minnesota Bureau of Criminal Apprehension is pulling a set of breathalyzer testing instruments believed to have delivered erroneous results in five counties.

Bureau officials announced Friday that they are asking local law enforcement agencies to temporarily stop using DataMaster instruments. The tools are used to conduct breath tests to determine a person’s blood alcohol concentration. But the BCA said in some cases, data entry errors in the breathalyzer’s gas cylinders potentially skewed results.

The agency will review data in each DataMaster’s gas cylinder to ensure it is accurate. And moving forward, the BCA will be responsible for all replacement and maintenance of the gas cylinders.

“The BCA is committed to the highest level of quality in our forensics lab and this is why we a

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