NSW State Emergency Services and NSW Police personnel have undertaken a search along Rocky Beach in Port Macquarie following the discovery of a small bone on Sunday, July 14.
The search operation was organised around 12.50pm on Monday, July 15.
A NSW police spokesperson said the bone is believed to be human and was discovered 300 metres north of Flynns Beach.
It has been collected by police and will undergo forensic examination in Newcastle, before being compared with missing person records.
Police are continuing their investigations without the use of Sydney police divers this week.
Three bones found south of Rocky Beach during June this year have been forensically matched to missing Frenchman, Erwan Ferrieux.
The 21-year-old went missing at Port Macquarie's Shelly Beach along with Englishman, Hugo Palmer on Sunday, February 17.
Mid North Coast Local Area Commander Superintendent Paul Fehon said the three bones were believed to be those of Mr Ferrieux.
"DNA comparison of the three bones found in early June have found that they did come from the same male person," Supt Fehon said.
"That DNA analysis has also confirmed that it came from a DNA comparison from the vehicle that was utilised by two missing backpackers at the time.
"We believe from the DNA comparisons that it belongs to Erwan Ferrieux."
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