MADISON, Wis. -

A woman was robbed by an armed man while walking on the near west side Friday morning, according to Madison police.

The 18-year-old victim told police she was walking on Lathrop Street near Chadbourne Avenue after 1 a.m. when she was approached by a man who demanded her belongings.

Police said when the victim asked why she should give him her things the man pointed a handgun at her and said, "Because I need them."

The victim turned over her purse and iPhone and fled. Officers called a K-9 to assist in searching for the man.

The robber is described as black, 5 feet 6 inches tall with a thin build and wearing a dark sweatshirt.