MIAMI (AP) — Fidel Castro’s younger sister says she collaborated with the CIA in 1964 following the Cuban revolution.

Juanita Castro, 76, told Univision’s WLTV-23 station late Sunday she initially supported her brother’s 1959 overthrow of the Batista dictatorship but quickly became disillusioned by the revolution’s vast number of executions and rampant expropriation of private property.

Her home became a sanctuary for anti-Communists before she fled the island in 1964. In the TV interview, Juanita Castro says she was approached by the CIA. The Miami Herald confirmed with station officials that she collaborated with the agency while she was in Cuba and after she left. She eventually settled in Miami and ran a pharmacy.

Her new memoir was released Monday by Santillana USA.