BRIDGEWATER, Maine — An 80-year-old Bridgewater woman has died after she was run over by a potato truck while working at a potato house.

State Police Sgt. Josh Haines said Wednesday that the accident that killed Dorothy Rusby happened at about 2 p.m.

Haines said police believe Rusby had been working in the potato house at Snow Road Farms on Snow Road shortly before she was found unresponsive in the yard by her co-workers.

Police said Stephen Holmes, 47, of New Limerick, had arrived at the potato house a short time before to unload his 1994 Freightliner potato truck.

Haines said Holmes was unaware Rusby was nearby and didn’t see her as he pulled out of the potato house after unloading.

He struck her, and — unaware of what had happened — drove away, according to Haines.

Crown Ambulance responded to the scene but pronounced her dead on arrival.

The investigation is ongoing and the state medical examiner’s office and officials from the Occupational Safety and Health Administration are assisting with the investigation.

Trooper Rob Flynn is the primary investigator and was assisted at the scene by Detective Sgt. John Cote, Haines and Troopers Nick Casavant and Dave Coflesky.