The 68-year-old son of Cuban revolutionary Fidel Castro, Fidel 'ngel Castro D'az-Balart, died in Havana, after reportedly taking his own life. <br/><br/>According to Cuba's state media, he was found yesterday morning and is said to have suffered from depression. <br/><br/>Popularly known as "Fidelito", he was the first-born son of the former president, who died in November 2016. <br/><br/>Castro D'az-Balart worked as a nuclear physicist having trained in the former Soviet Union.<br/><br/>