LAS VEGAS — A former personal aide to B.B. King is suing three of the late blues legend’s daughters in Las Vegas over their allegations that King was poisoned before he died in May.

Myron Johnson’s civil lawsuit filed Thursday in Clark County District Court accuses Karen Williams, Patty King and Rita Washington of seven causes of action including defamation, slander, libel and conspiracy.

Johnson was at King’s bedside when King died May 14 in hospice care at home in Las Vegas at age 89.