The search for a body in Melbourne's outer south-east is believed to be linked to the missing Frankston woman Karen Rae who hasn't been seen since April 15, 2015.
Police and SES search teams were combing an area of a busy highway in Frankston on Friday afternoon looking for buried remains.
They were back on the scene on Saturday, looking under bushes, in drains and digging up dirt by the Frankston Freeway.
Police would not confirm who the search was related to, only saying it was part of an ongoing investigation.
Missing mother Karen Rae.
However, Channel Seven has reported the line search was connected to the missing 48-year-old.
Ms Rae was last seen leaving her home on Adib Court on the evening of April 15 and has not contacted her friends or family since.
At the time of her disappearance, police would neither rule out foul play, nor the possibility that the woman, said to be a mother-of-four, did not want to be found.
Around the time she went missing, Ms Rae was thought to have been with a man driving a dark blue Holden Commodore.
Police search the Frankston Freeway on Friday.Credit:Channel Seven
- with Marika Dobbin Thomas, Rania Spooner