Chicago police are investigating the sexual assault of a 21-year-old woman at a frat house near the University of Chicago in Hyde Park early Sunday, according to Chicago police and the university newspaper. The woman told officers the assault happened around 2 a.m. Sunday in the 5600 block of South University Avenue, Chicago police said. The assault allegedly happened at the house of the Lambda chapter of the Alpha Epsilon Pi (AEPi) fraternity, according to the university's student newspaper. She went to the University of Chicago Medical Center for treatment, police said. The student paper reported that the woman isn't a student. Area 1 detectives were investigating. ...read more read less