Tests revealed BB King was not poisoned before death

A post-mortem examination has reveled that blues lagend BB King was not poisoned before he died in May.

Tests were conducted after two of the musician's 11 children said their father had been murdered.

Medical examiners has found the cause of death was Alzheimer's disease, plus physical conditions including coronary disease, heart failure and the effects of Type 2 diabetes, Clark County Coroner John Fudenberg said.

Daughters Karen Williams and Patty King said through their lawyer that King's business manager, LaVerne Toney, and his personal assistant, Myron Johnson, hastened their father's death.

Brent Bryson, a lawyer for King's estate, has called the claims defamatory and libellous.

"Ms Toney and Mr Johnson are very happy that these false and fictional allegations that were made against them by certain of Mr King's children have been dispelled," Mr Bryson said.

"Hopefully we can now focus on the body of musical work that B.B. King left the world, and he can finally rest in peace."

Tests were conducted after two of the musician's 11 children said their father had been murdered (Photo: AP)

This revelation has closed official investigations of King's death, Mr Fudenberg said.

Homicide Lieutenant Dan McGrath said there is no active police investigation.

BB King died in hospice care at home in Las Vegas on 14 May, aged 89.

The autopsy was conducted on 24 May, two days after a public viewing in Las Vegas drew more than 1,000 fans and mourners, and one day after a family-and-friends memorial drew 350 people to a downtown Las Vegas funeral chapel.