Mr Thaidy, aged 60, was last seen at his home on Delasala Drive in Macquarie Hills about 12am on Sunday December 6.

Family members reported him missing to police later that day and officers from Lake Macquarie commenced inquiries into his whereabouts.

Since then police launched an initial public appeal for help, conducted several searches in bushland in Macquarie Hills with assistance from several emergency service resources and conducted a search by air, but he has not been found.

Police and family members hold grave concerns for Mr Thaidy's welfare due to medical conditions. This is the longest period he has been out of contact with his family.

As police continue their inquiries, they have released CCTV images of Mr Thaidy on the day he was last seen.

The video is taken about 9.25am on Macquarie Road at Cardiff, while the second image below is about half an hour later from Macquarie Road at Warners Bay.

Police are asking members of the public who may have driven down Macquarie Road or Hillsborough Road on Sunday December 6 between 9am and 12-midday to check their dashcam footage. Or for anyone who may have CCTV along either of these roads to check their footage for the missing man.

He is described as being of Aboriginal/Torres Strait Islander appearance, about 175cm tall, with a medium build, short black hair, scruffy facial hair and brown eyes. He is not currently wearing his dentures.

He was last seen wearing a dark coloured long sleeve shirt, light-grey tracksuit pants tucked into black socks, and white slides

Anyone who may have seen him or knows his whereabouts is urged to contact police or Crime Stoppers on 1800 333 000.

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