About 5:20 a.m., an unidentified male attempted to sexually assault the student, said Major Robert Dean of the Duke University Campus Police.
Dean said that the victim is in good condition physically but that "it was a traumatic experience for her."
Dean described the assailant as an 18- to 25-year-old white male. He said the man is described as being about 6 feet tall with a stocky build and "longish brown hair" and wearing jeans and a red shirt.
Dean said the victim did not know her attacker. He said the attacker will face charges of first-degree attempted sexual assault if apprehended.
No suspects had been named as of press time.
Another female student was found Jan. 31 at 6:30 a.m. in a restroom in Randolph Residence Hall by Duke Police. The (Raleigh) News & Observer reported that the woman had been beaten and sexually assaulted.
The university police force implemented additional security measures after the January assault, but Dean said Duke officials will look for additional ways to revamp its security.
"Each time we have an incident, we review what we're doing security-wise," Dean said.
Plans for increased safety include additional locks on the doors of residence hall bathrooms so that men and women can only access facilities designated for their sex.