It happened just after 9 a.m. Thursday.
Detectives said their preliminary investigation shows a man walked into a house and assaulted a woman. The suspect appears to have been a stranger. It's not known how the man got inside the house.
The suspect was described as a black male, possibly in his early 20s and approximately 5 feet 7 inches tall with a small build. He was wearing light-colored blue jeans, a black sweatshirt and a black ball cap.
Police are investigating but they're not saying much about the case.
Anyone with information is asked to contact Investigator A. Gill at (919) 560-4440, ext. 29324 or CrimeStoppers at (919) 683-1200. CrimeStoppers pays cash rewards for information leading to arrests in felony cases and callers never have to identify themselves.