BALTIMORE — Johns Hopkins University says it is investigating after a student reported she was sexually assaulted at a fraternity house.

According to campus security officials, a female student reported Friday that she was assaulted at the house across the street from the Homewood campus a week earlier.

Local media report officials know the identities of both parties and are investigating the allegation.

The fraternity, Alpha Delta Phi, didn’t respond to a message from The Baltimore Sun seeking comment.