The skeletal remains of a man who was thought to be an Indigenous Australian and given to a museum are now the subject of a NSW coronial inquest.
On Thursday the matter was adjourned by Deputy State Coroner Carmel Forbes, allowing police to call for more information about the "unknown skeleton" which was discovered on August 19, 1976.
The unidentified man was found close to an Indigenous rehabilitation centre at Wrights Creek Road along the Macdonald River in St Albans, said Sergeant Brooke Notley, assisting the coroner.
He was believed to be aged between 25 and 45, and was wearing a wool cardigan and shorts at the time of death, which was any time from 1960 to 1976.
After the remains were given to the Australian Museum an external forensic department concluded they were of Indigenous descent.
However, in 2009 the museum conducted its own analysis of the remains and determined the body was not Indigenous, and predominantly of European heritage.
Police inquiries have ruled out three missing people from the area and they are urging anyone with any information to come forward.