The station received a phone call from distressed residents, reporting the theft of more than $100,000 worth of jewellery and cash from their home.
Officers organised an investigation team, including forensic officers, detectives and uniformed police, to visit the scene and conduct door knocks.
On arrival, the resident led officers into the back yard to witness a hole dug up in the garden bed.
Police say the resident explained how they kept valuables in an airtight, water-tight container, buried in the garden.
Canning Vale Police officer-in-charge Glenn Spencer said officers were told the residents had marked the area with a brick, which had been moved by their children.
Adamant that they were digging in the correct spot, detectives suggested continuing digging in surrounding areas to rule out any errors.
‘After a little more digging by one of the residents, there was the customary ‘chink’ when the shovel hit the containers,’ Sergeant Spencer said.
Police say the incident could have been prevented with more care and a reliable safe.
‘Some people have a mistrust of banks, whether it is through a bad experience or fear of economic downfall,’ he said.
‘If you don’t trust banks, invest in a good quality safe and secure it to three solid surfaces, in this case there was several thousand dollars in cash, less than 10 per cent of which would get a commercial quality safe.’