They remain in police custody at this time. Detective chief inspector Dave Horsburgh, based at Abingdon police station, said: "This was a very serious assault that happened in the early hours of this morning. "We have made two arrests in connection with this incident, and both suspects remain in custody. "Obviously, this is a concerning incident, but at this early stage of the investigation, we believe this to be an isolated attack and I would like to re-assure the local community that we are conducting thorough investigations to ascertain what has happened." The force appealed to anybody with information about the attack or those who believe that they witnessed it to get in touch, quoting reference number 43210000204.