Palmerston North police are asking for the public's help following a serious assault last week.
A woman walking along the Mangaone Stream Walkway, near Amberley Avenue, about 6pm on Tuesday was followed by a man on a bicycle.
He then assaulted the woman, who required medical treatment for her injuries.
Police said she was now recovering at home.
They said the man was described as middle-aged, Maori, and was wearing dark clothing.