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.
Moore was reportedly found dead in his luxury hotel room in the Costa del Sol. He was said to be on holiday at the time of his death.
A postmortem is due to be carried out later in nearby Malaga.
In a career dating back to the 1960s, Moore played with artists including Phil Lynott and Brian Downey as early as his secondary school days, leading him to a membership twice with Thin Lizzy.
Moore has shared the stage with such blues and rock luminaries as B.B. King, Albert King, COLOSSEUM II, Greg Lake and Skid Row (not to be confused with the glam metal band of the same name), and has had a successful solo career.
A postmortem is due to be carried out later in nearby Malaga.
In a career dating back to the 1960s, Moore played with artists including Phil Lynott and Brian Downey as early as his secondary school days, leading him to a membership twice with Thin Lizzy.
Moore has shared the stage with such blues and rock luminaries as B.B. King, Albert King, COLOSSEUM II, Greg Lake and Skid Row (not to be confused with the glam metal band of the same name), and has had a successful solo career.
RIP Mr. Moore