An elderly woman who died after being found on a roadside grass verge in Oxfordshire had not been involved in a car crash, police have said.
The 81-year-old was found at the side of the A420 near Faringdon on Tuesday.
A port-mortem examination concluded the woman died of head injuries but had not been hit by a car.
The woman had been seen walking from the BP service station towards Buckland crossroads on the A420 near Faringdon, at about 16:05 BST.
She was taken to the John Radcliffe Hospital in Oxford, but died later.
The A420 was closed for two hours while police examined the scene.
Thames Valley Police said there were no suspicious circumstances surrounding the woman's death. An inquest is due to be opened later.