The singer suffered a cardiac arrest while on tour
Frank Sinatra Junior, who carried on his famous father's legacy with his own music career, has died at the age of 72.
He suffered a cardiac arrest while on tour in Daytona Beach in Florida.
The singer had traveled there to perform his Sinatra Sings Sinatra show, where he did renditions of his father's greatest hits.
Sinatra Jr was married in 1998 but divorced in 2000. He is survived by his son Michael.