(WXYZ) — Michigan State Police has stopped its contract with its breath alcohol testing device vendor of more than 20 years due to reported "performance-related issues" with the equipment.

The stop order was issued Jan. 7, 2020.

According to state police, "Prosecutors with cases impacted by the contractor errors identified by the MSP have already been notified. However, out of an abundance of caution, we are examining all available data to determine if any additional tests are impacted by the contractor errors. If any additional errors are found, a report will be immediately forwarded to the affected prosecutor."

According to MSP Lt. Michael Shaw, local authorities will continue using the breath alcohol testing device, but MSP will calibrate them.

Read the full letter below:

Wayne County Prosecutor Kym Worthy released a brief statement Sunday saying, “We will of course perform our due diligence. It’s premature to comment further at this point.”