WASHINGTON (WUSA9) -- Police are looking for a man who groped a woman in Northwest, D.C. Wednesday night.

The assault happened in the 1600 block of 33rd Street around 8:15 p.m. Metropolitan police said the woman was walking when a man came up behind her and groper her.

Police said the man ran south on 33rd Street and then west into the 3300 block of Dent Place in Northwest, D.C.

The suspect is being described as a white man, between the ages of 20 and 30, standing 5'10" and with an average build. He was unshaven and had some facial hair. Police said the man was wearing a gray hoodie with black stripes and running shoes.

Anyone who has information regarding this case should call police at 202-727-9099. Additionally, information may be submitted to the TEXT TIP LINE by text messaging 50411. Crime Solvers of Washington, DC currently offers a reward of up to $1,000 to anyone who provides information that leads to the arrest and indictment of the person or persons responsible for an assault committed in the District of Columbia.