A man and a woman broke bones and had to be treated in hospital after a three-car smash at a main road junction.
A red Alfa Romeo crashed with a dark-coloured Ford Mondeo and a silver Land Rover around 5.50pm on Saturday at the A4421 Buckingham Road junction with the Poundon turn.
The 26-year-old driver of the Alfa Romeo broke his pelvis and suffered internal bleeding. He was taken to the John Radcliffe Hospital in Oxford for treatment.
The driver of the Mondeo, a 57-year-old woman, broke her foot and was also taken to the John Radcliffe for treatment.
PC Duncan Vale from Roads Policing in Bicester said: “I am particularly interested to speak to anyone who may have seen the red coloured Alfa Romeo or a blue Citroen driving along the A4421 from Bicester towards Buckingham on Saturday prior to this collision happening.”
If you have any information, call 101.
Alternatively, call Crimestoppers anonymously on 0800 555 111.