UNION — Police say a Jefferson man has died after losing control of his vehicle on Route 17 in Jefferson.

The Knox County Sheriff’s Department says it appears as if 37-year-old Chris LaFrance lost control of his SUV while traveling east at about 2 p.m. Tuesday.

The vehicle clipped the end of a guard rail then traveled another 300 feet before rolling down an embankment.

WABI-TV reports that a driver headed in the opposite direction spotted the car down the embankment and called 911.

LaFrance was pronounced dead at the scene.

The death remains under investigation but police say LaFrance may have had some sort of medical emergency.