Police searched the Barmah National Park in Victoria's north - where the Ristevski family is believed to have holidayed - in addition to areas surrounding her Avondale Heights home, Channel 7 reports. 

Karen Ristevski with her husband Borce and daughter Sarah. Photo: Supplied

Victoria Police would not confirm the report or specify which areas had been searched.

"The missing persons squad has searched a number of areas," Sergeant Anthoula Moutis said.

"The investigation is still ongoing."

Nearly two months have passed since Mrs Ristevski, 47, was last seen on June 29.

It's believed she and her husband had an argument over financial issues and Mrs Ristevski left their home for a walk to "clear her head".

Her bank account and phone have not been used since.

Water police have also searched the banks of the Maribyrnong River next to the Anglers Tavern - downstream of the family's house in Avondale Heights.

They have also been doorknocked around Mrs Ristevski's home.

Mrs Ristevski is described as 160 centimetres tall, with a slim build and shoulder-length brown hair.

She was last seen wearing a black jacket and jeans and it is believed she was carrying a Coach handbag and purse.

More to come