http://www.bbc.co.uk/news/uk-northern-ireland-12377862
Mr Moore, 58, was, originally from Belfast, and was a former member of the legendary Irish group Thin Lizzy.
Adam Parsons, who manages Thin Lizzy, told the BBC that Mr Moore had died in the early hours of Sunday morning.
Mr Moore was originally drafted into Thin Lizzy by its singer Phil Lynott. He later gained acclaim for his solo work and was a former member of the Irish group Skid Row.
The Northern Ireland guitarist was only 16 when he moved from Belfast to Dublin in 1969, to join Skid Row, which featured Lynott as lead vocalist.
He was later brought into Thin Lizzy by Lynott to replace the departing Eric Bell, another guitarist from Northern Ireland.
Mr Bell told the BBC on Sunday he was still "in shock" at Mr Moore's death.
"I still can't believe it," he said.
"He was so robust, he wasn't a rock casualty, he was a healthy guy.
"He was a superb player and a dedicated musician."
