SALEM, S.D. (AP) – Authorities have released the name of an 85-year-old woman who died after a collision in McCook County involving a minivan and a tractor.

The South Dakota Department of Public Safety on Tuesday identified the victim as Helene Eichacker of Salem.

Authorities say Eichacker was a passenger in a minivan that rear-ended the tractor on state Highway 38 a mile west of Salem shortly before 6 p.m. last Wednesday. She was flown to a Sioux Falls hospital, where she died Thursday.

The minivan driver was taken to a Sioux Falls hospital with serious injuries. The tractor driver was not hurt.

The patrol says the tractor had its flashing rear lights on at the time of the crash.