MOOSUP, Conn. (WTNH) — Plainfield police have ruled the death of a man in Moosup as accidental after he was found unresponsive with serious injuries in his driveway.

Around 2 a.m. Sunday, Quinebaug Valley Communications Center contacted the Plainfield Police Department requesting they respond to Ward Avenue for a reported unconscious man.

Upon arrival, American Legion Ambulance and Moosup Fire Department were on the scene providing care to the man who police identified as Michael Roberts, 56, of Moosup.

Police said Roberts was taken to Backus Emergency Care Center where he was pronounced dead.

Through their investigation, police said they determined the people who reported the incident exited their home and discovered a Ford F150 at the end of the driveway with its headlights on.

When they approached, they observed Roberts to be unresponsive and severely injured on the ground, according to police. Emergency medical services were contacted immediately and CPR was started, police said, and Roberts was taken from the scene for further treatment once emergency services arrived.

According to police, an autopsy was performed on Roberts on Sunday at the Office of the Chief Medical Examiner. It was determined that Roberts suffered blunt impact injury to the torso and the manner of his death was ruled accidental.

Police believe Roberts exited his car in the driveway of his residence which happened to be on an incline. When Roberts began walking, it is believed his car was not properly placed in park, as it rolled backwards, striking him. The impact caused Roberts to suffer from serious physical injuries resulting in his death.

This incident remains under investigation. Anyone with further information is asked to contact the Plainfield Police Department at (860) 564-0804.