Police want to speak to an elderly dog walker who spoke to a woman moments before she was raped in Eynsham.

The 50-year-old victim told police she was attacked by a man in the sports field off High Street at about 9.40pm on Sunday while she was walking her dog.

Her attacker said he had a knife before forcing her to perform a sex act on him. She managed to push him away and escape before running to a nearby house.

All such attacks are now classified as rape by police.

She revealed she had a short conversation with an elderly man, who was accompanied by a child and a terrier dog, and police believe he may be able to help the investigation.

Call police on 08458 505505 or Crimestoppers on 0800 555111.