Searches are underway in Scarborough after a 35-year-old woman was found dead in a car travelling on a Perth freeway.
The homicide squad is investigating after the woman's body was discovered in a Mitsubishi Lancer on the Mitchell Freeway, near the Cedric St off-ramp, about 12.35am on Saturday.
The 49-year-old driver is assisting police with their inquiries.
Police have re-opened the roads on the Mitchell Freeway, which had been reduced to one lane on Saturday morning.
© AAP 2017