man who they believe attacked a UW student on a downtown bike path over the weekend

Madison Police are searching for a man who they believe attacked a UW student on a downtown bike path over the weekend.The victim, a 20-year-old woman, told officers she was walking on the bike path in the 100 block of N. Mills St. Saturday around 7:40 p.m. when a man approached her with a gun and grabbed her purse.She says the robber fled west on the bike path.The suspect is described as a man possibly of Asian ethnicity between 20-25 years old, 5'6", 150 lbs. medium build with dark eyes and heavy dark eyebrows, wearing a dark hooded sweatshirt with hood up, black knit mask covering his nose and mouth and dark pants.The gun was black with a long barrel. The victim's purse is dark brown with a light brown trim, rectangular with a peace sign decoration.