Between 10.50 and 11.20pm on Sunday, December 3, a woman was assaulted by a male and a female in Gray Street, Swan Hill, between Stradbroke Avenue and High Street.
Police are appealing for witnesses to the assault, specifically an occupant of a passing car who stopped to separate the two parties.
Anyone with information about the incident should call Leading Senior Constable Neuschafer at Swan Hill police station on 5036 1600.