Detectives are appealing for witnesses after a woman was sexually assaulted while walking along the Nutbrook Trail near Kirk Hallam.
The assault happened at about 1.30am this morning(Saturday)A short time after police arrested a 33-year-old man. He is in police custody.
A large part of the Nutbrook Trail around Swan Lake, as well as the car park and a stretch near Kirk Hallam Community Academy, is currently cordoned off while officers carry out searches in the area.
Derbyshire Police say the investigation is in its early stages and want to hear from anyone who was in the area in the early hours of the morning. Investigators say they have a large number of officers in the area and anyone who wants to speak to them is welcome to.