A schoolgirl was sexually assaulted in a park in Long Hanborough on Sunday evening.
Police said the girl was approached by a man in the park off Roosevelt Road and attacked.
One of the girl's friends alerted people nearby and a man was held until police arrived.
Officers were called just after 5pm and the area was cordoned off to the public.
David Cromack, 21, had been riding his BMX in the skate park at about 5.30pm.
He said: “They asked me to leave saying there had been an incident in the park. They were checking all the exits. We saw about four or five police cars dotted around the village.”
Lynda Leach, deputy manager of Hanborough Pre-School, based in the nearby pavilion, said it was the first time she had known the park to have been shut.
She said: “My husband has lived here all his life and he said nothing like that has ever happened.”
A 23-year-old man who was arrested by police on suspicion of sexual assault was released on bail yesterday.
Det Insp Tom Brooks said they were appealing for anyone with more information to contact police on 101.
• Our top stories:
7:32am Thursday 2nd April 2015
FORMER police chief constable Sara Thornton is being given £252,000 in her new role as the head of the National Police Chiefs Council.
7:16am Thursday 2nd April 2015
REFORMED Oxford rock group Ride had fans suspecting an April Fool’s joke yesterday, after announced an intimate hometown warm-up gig.
7:08am Thursday 2nd April 2015
LOWER charges for water and sewerage services came into force this week, but Thames Water customers will see one of the smallest savings.
8:30am Wednesday 1st April 2015
A MULTI-MILLION pound deal has been signed to transform the city’s West End with hundreds of homes, a hotel and office space.
6:38pm Wednesday 1st April 2015
THE brothers of a man who led a multi-million pound drugs conspiracy have also been jailed for dealing cocaine, crack and heroin.
5:46pm Wednesday 1st April 2015
A WOMAN was been taken to hospital after being involved in an accident with a taxi on Oxford High Street.