Police are urging a dog walker to come forward after a female was seriously assaulted in Upton on Friday February 3rd 2012.
The incident happened in Upton, near Poole on a footpath leading off Sandy Lane at 16.45.
Dorset Police are especially interested in speaking to a woman who was wearing a purple coloured coat and walking a black Labrador dog in the area at the time of the incident.
The police stress that it was an isolated incident and there are no concerns to the general public.
A man has been arrested and is assisting the police with their investigation.
Witnesses and anyone with information should call Dorset Police quoting incident number 151. Alternatively, call the free and anonymous Crimestoppers line on 0800 555111.