A woman was assaulted in the country park at the rear of Great Bear Distribution in Salthouse Road, Brackmills, Northampton, police reported today.
The incident happened between 1.30pm and 2pm on Wednesday, September 28 when the victim was walking through the park.
A spokesman for Northamptonshire Police said: "She was pursued by a man who walked faster to catch up with her then touched her inappropriately and attempted to pull her to the ground, The victim was able to pull away and run off."
Police have arrested a 29-year-old man in connection with the incident.
Anyone who witnessed the assault or with any information is asked to contact Northamptonshire police on 101. Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111.