Police dig fails to shed light on Beaumont mystery

South Australian Police have excavated a site in Adelaide following a tip-off relating to the disappearance of the Beaumont children.

Police were led to the site after two members of the public came forward with information in July.

Ground penetrating radar was used on the North Plympton site, at the rear of the Castalloy factory near the intersection of Raymon and Kinkaid Avenues.

The radar discovered one small anomaly and police said they excavated the site ‘in order to be able to categorically state that every possibility was thoroughly examined and discounted’.

Police dug a hole three metres deep and seven metres wide.


Police excavating the site at North Plympton. Photo: 7News.
Police excavating the site at North Plympton. Photo: 7News.

No new information or evidence relating to the disappearance of the three Beaumont children was uncovered in the dig.

Police said it would now rule the site out of their investigation.

The Beaumonts, Jane, who was nine, Arnna, 7, and four-year-old Grant went missing on Australia Day, 1966 after failing to return from a trip to Glenelg beach.

Police said the case remains open and have vowed to never give up trying to solve Australia's most baffling cold case.