Cuban state-run media, Cubadebate website reported that, "Diaz-Balart, who had been attended by a group of doctors for several months due to a state of profound depression, committed suicide this morning."

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The 68-year-old man also known as "Fidelito" because of how he resembled his father reportedly died on Thursday, but it is not clear from the reports how he killed himself.

According to Africanspotlight.com, before his death, Fidel Castro Diaz-Balart had been working as a scientific counselor to the Cuban Council of State and Vice-president of the Cuban Academy of Sciences, having studied nuclear physics in the former Soviet Union.

His death comes just after one year and few months when his father, Fidel Castro died.