The eldest son of former Cuban leader Fidel Castro committed suicide while living on the island his father ruled as president for more than 40 years, NBC News reports.
Castro Diaz-Balart, 68, died on Friday morning following months-long treatment "for a deep state of depression by a group of doctors."
Diaz-Balart had been hospitalized for his depression but was later released for outpatient care.
He had been serving as the scientific adviser to the State Council and vice president of the Cuban Academy of Sciences.