Legendary blues musician
King's daughter, Claudette, told The Times that her father was suffering from dehydration caused by his Type II diabetes.
Born Riley B. King, the 89-year-old
His hits include 1950s R&B piece "Three O'Clock Blues," 1970's "The Thrill Is Gone" and 1989's "When Love Comes to Town," a collaboration with U2.
King, born in Mississippi, began his recording career in the 1940s and has released more than 50 albums, according to his official website.
Also known as the "King of the Blues," King was inducted into the Rock and Roll Hall of Fame in 1987. Rolling Stone and Gibson have ranked him among the greatest guitar players of all time.
Last October, King fell ill during a show, was diagnosed with dehydration and exhaustion and canceled the rest of his concert tour.