Inspectors are examining whether a mechanical issue caused the car to stop unexpectedly, which subsequently led to the air conditioning shutting off.

A review is underway after Baxter, the state of Maine’s first official comfort dog, died Wednesday afternoon inside a state vehicle.

The Maine Department of Public Safety is grieving the unexpected death of Baxter, a three-year-old chocolate lab who brought comfort and companionship to emergency responders across the state.