The incident happened in Albany, at a residence on Mercer Street near South Lake Avenue, shortly after 10 p.m. Monday, Sept. 9.
Albany Police said a man knocked on the door of the victim’s apartment and announced that he was a member of the Albany Police Department.
When the woman unlocked her door, the man forced his way inside and pulled a knife before sexually assaulting her, police said. He then fled the scene on foot.
The victim suffered a cut to the right side of her face.
Police described the suspect as a white man who is approximately 5-foot-8. He was last seen wearing all black clothing.
Anyone with information is asked to contact Albany Police at 518-462-8039.
Click here to follow Daily Voice Scotia-Glenville and receive free news updates.