A three-day dig of a property near the small Queensland town of Gin Gin has failed to find bones but police are still investigating concealed births there.

Police have finished excavating a rural Queensland property in the search for several babies believed to have been buried there more than a decade ago.

No skeletal remains were found during the three-day dig on the property, near Gin Gin, southwest of Bundaberg, which began on Monday.

But Queensland Police say detectives will speak to several people about information received during the excavation.

One family who lived on the land at that time is the focus of the probe, following a tip-off from the public several months ago.

Several items – which Detective Inspector Mick Dowie, of the Cold Case Homicide Unit, had described as foreign objects in the soil – found on the property on Tuesday will be forensically examined.

It is believed a number of babies were born in secret and their remains disposed of at the property in the late 1990s and the early 2000s.