An anonymous donor has offered a €100,000 reward for information about missing person Trevor Deely.

The 22 year old Naas man was last seen leaving his office on Haddington Road in Dublin in the early hours of December 8th 2000.

Gardai have released enhanced CCTV footage in the hope of finding a man seen briefly talking to Trevor shortly before he disappeared.

The man is seen waiting outside Trevor's workplace - the Bank of Ireland Asset Management Centre - on Wilton Terrace for around half an hour in the pouring rain before Trevor arrives.

When Trevor arrives, he moves and is then seen briefly speaking to Trevor at the back gate of the building.

Trevor leaves his office shortly after 4am and is last seen walking down Haddington Road towards Baggot St Bridge under an ACC Bank umbrella which he's borrowed from work.

Crucially a man is seen following him, which Gardaí believe could be the same man he was speaking to earlier.

Gardaí and Trevor's family are appealing for this man, anyone who knows him or anyone who has any information at all to ring Gardaí or freephone Crimestoppers on 1800 25 00 25.

Nicole Gernon reports: