NEW BRUNSWICK - Police have released a sketch of a man they say attacked a Rutgers student more than a month ago and is still on the loose.

The Middlesex County Prosecutor's Office says the victim was a 24-year-old student who was walking along Townsend Street between Livingston and Joyce Kilmer avenues at around 2:30 a.m. on Jan. 31.

The student says she was attacked by a man who punched her repeatedly in the face and then sexually assaulted her, according to police.

Authorities say the victim kicked the attacker and screamed before knocking on a stranger's door looking for help.

The suspect is a Hispanic man, 30-40 years old, and clean-shaven with dark, spiked hair. He is believed to be between 5 foot 5 inches and 5 foot 8 inches tall and heavy set, police say.

Though the attack happened off campus, Rutgers students say they are troubled by the assault and try to avoid walking alone at night.

"I'm either always in groups or I make sure anything that I really need to do is just done early," says Corrine Jean-Louis, "like in daylight or somewhere where there's a lot of people around."

Authorities are hoping the detailed composite sketch from New Jersey State Police is going to generate some leads. Anyone with information is asked to contact New Brunswick police or the Middlesex County Prosecutor's Office.