Juanita Castro, anti-communist sister of Cuban leaders Fidel and Raul, dies at 90

Juanita Castro, sister of Fidel Castro, talks to a reporter, Oct. 27, 2009, in Miami. Juanita Castro, the anti-communist sister of Cuban rulers Fidel and Raul Castro who worked with the CIA against their government, has died in Miami at age 90. (Alan Diaz/AP)

MIAMI — Juanita Castro, the sister of Cuban rulers Fidel and Raúl Castro who worked with the CIA against their communist government, has died in Miami at 90. Florida had been her home since shortly after fleeing the island nearly 60 years ago.

Journalist María Antonieta Collins, who co-wrote Juanita Castro's 2009 book, "Fidel and Raúl, My Brothers. The Secret History," wrote on Instagram that she died on Monday.