Warrnambool Police are investigating a sexual assault at Cannon Hill.
Sergeant James Van Engelen said the incident occurred on Saturday morning “at approximately 1:30am”.
Police had set up a crime scene at the area after 9am.
“We are still at initial stages of the investigation,” he said.
“We’d appreciate any witnesses to come forward.”
Anyone with information can contact Warrnambool Police on 5560 1333.