Over 100 additional DWI cases may have been impacted by errors in testing equipment , the Minnesota Bureau of Criminal Apprehension said Friday, bringing the total number to at least 394.

According to the BCA, 108 cases in Blue Earth County, six with the Sauk Center Police Department and three with the Chisholm Police Department may be impacted. Officials said earlier this month that 277 cases were possibly impacted after it discovered errors while installing gas cylinders in DataMaster instruments, which are breath testing machines.

When a machine is first set up, law enforcement officers enter information from the cylinder into the system, according to the BCA. That information is then used for all tests until the cylinder is replaced, at which point information from the new cy

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