A woman in a wheelchair has died after a van crashed into her in Haddenham.
The 69-year-old was being pushed along Stanbridge Road at Thursday lunchtime by another woman when the red VW camper van hit them.
It happened at about 1.50pm.
Both were taken to Stoke Mandeville Hospital.
The 52-year-old has broken bones and is being treated, but the other victim died of her injuries.
PC Alan Turnbull, from the Serious Collision Investigation Unit in Bicester, said:
"I would like to hear from anyone who witnessed the collision, or saw the camper van before it happened.
"Anyone with information should call 24-hour Thames Valley Police enquiry centre on 101 quoting URN 701 10/09.
"If you do not want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111. No personal details are taken, information is not traced or recorded and you will not go to court."
Source: Mix96 News