About 275 breath tests for suspected DWIs may have been impacted by “human error,” the Minnesota Bureau of Criminal Apprehension said Monday.

Prosecutors and the Minnesota Attorney General’s office will need to examine each case individually to make a determination, according to BCA Superintendent Drew Evans.

DataMaster machines are stationed at law enforcement offices around the state, used by officers to give breath tests to people suspected of driving while intoxicated and taken into custody. Errors have been “identified … in particular when changing out a dry gas cylinder that is used for a control test,” Evans said.

The more detailed information from Evans came after the BCA announced Friday that it had ordered all law enforcement agencies in the state to suspend usage of DataMaste

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