Major Collision Investigation Unit detectives have interviewed a man following a death in Kiata earlier this month.
Detectives believe a Wimmera woman died after being hit by a truck on the Western Highway, in Kiata.
A passerby located human remains on the Western Highway just after 8am on April 4, but police believe the woman was hit sometime between 9pm on April 3 and 2am on April 4.
Detective Inspector Craig McEvoy, of Major Collision Investigation Unit, said the woman had not been formally identified yet as police await confirmation from the coroner.