Police are appealing for witnesses after a woman was attacked in Woodthorpe Grange Park
The woman, aged in her fifties, was targeted as she walked through the park at about 11pm on Saturday, October 26.
Her attacker is said to have fled the scene after being disturbed by a barking dog.
Officers have been following a number of lines of inquiry and are now appealing for members of the public to come forward.
Detective Sergeant Helen Sanders, of Nottinghamshire Police, said: “We are treating what happened as a sexual assault and have been working to identify the person involved.
“This incident took place in the dark and in a secluded location. For that reason we are keen to hear from anyone who saw or heard anything suspicious in the area at the time.
“We would particularly like to hear from anyone who saw a man acting suspiciously in the area – and particularly from any driver with dashcam footage recorded in the area at the time.
“Even something seemingly innocuous could make all the difference in this case so I urge people to take a moment to think about what they saw or heard in the area at around the time of this incident.”
Anyone with information is asked to call 101 quoting incident 24000645868.