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Victoria Police believe new leads in two brutal cases in which young women were snatched off Melbourne streets and sexually assaulted in the 1980s may be found in Perth.

Weeks after police linked the two cold cases, detectives from the Sexual Crimes Squad have travelled to Western Australia as part of an ongoing investigation into the cases.

In April, police appealed for information about a 1985 case in which 18-year-old schoolgirl Susan* was dragged into a car on Bray Street in South Yarra, blindfolded, gagged and sexually assaulted by at least three men before being dumped in Richmond three hours later.