LATEST: The father of Anna Nicole Smith's dead son has spoken out about his shock upon hearing the 20-year-old passed away on Sunday (10SEP06). The busty blonde's ex-husband BILLY SMITH has not seen his son DANIEL since he was two, but he's still devastated by the news. Smith tells US TV news show Extra, "It's so sad. I hated that it happened. He was so young. I'm sort of in shock right now." Daniel Smith died from a suspected massive heart attack in the Bahamas on Sunday after flying out to be with his mother and his baby sister, who was born there on Thursday (07SEP06).