Police are appealing for witnesses following a reported sex attack in Bicester.

An 18-year-old victim said she was attacked while walking along the footpath from London Road towards Mallards Way.

Police spokesman Victoria Bartlett said: "It's believed she was sexually assaulted at some time between 2am and 2.30am on Thursday."

Dc Jill Morton, who is investigating the incident, said: "There is no description of her attacker. I would urge anyone who saw a man acting suspiciously or saw the woman along this route to come forward."

The woman is described as white with short, dark hair, 5ft 8in and of medium build. She was wearing a blue coat, blue jeans and white trainers.

Anyone with information can call police on 08458 505505 or Crimestoppers anonymously on 0800 555111.