The banker was gunned down on his doorstep 18 years ago, and despite a major manhunt his killer remains at large.
Detectives travelled to Canada to interview a key witness recently and are appealing for the public's help in gathering more information.
Detective Superintendent Graeme Mackie said it had been"shortly before" Mr Wilson was murdered, that he had objected to Moray Council about the building of the decking area, claiming it was"responsible for increased noise and litter in the area". "I would also appeal to anyone who was involved in the building of the decking area at the Havelock Hotel in 2004 to come forward.
"Someone locally will have that piece of information that could be crucial to catching his killer and providing answers for his family."Last month, a witness reported he saw a man in possession of a handgun on East Beach in Nairn around a month before the fatal shooting after police launched an appeal. He was with another man aged between 40 and 60 years old.
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