Waterloo Regional Police are investigating a sexual assault that occurred in Waterloo.

Police said that on Nov. 2, around 2 a.m., a woman was sexually assaulted by an unknown man while in the lobby of a building.

The incident allegedly happened in the area of ​​Sunview Street and University Avenue West.

Police said the woman was walking when she realized she was being followed by a man. She ran into the lobby of a residential building where she was chased and sexually assaulted by the man. The victim broke free and the man left the area.

The woman was not physically injured.

The WRPS Special Victims Unit is investigating and looking to speak to the suspect.

The suspect was described as a black male, approximately 20 to 30 years old, 5’5” with a medium build.

Anyone with information is asked to call police at 519-570-9777, extension 8413.