Argentina ? A daughter of famed revolutionary Ernesto “Che” Guevara has become an Argentine citizen after decades of living in Cuba, an Argentine official said Tuesday.

The news that Celia Guevara March, 44, had obtained Argentine citizenship last January sparked speculation that she and other members of her family had begun making plans to leave the island nation after Cuban leader Fidel Castro fell ill last July.

Eduardo Gomez, a spokesman for the Argentine Embassy in Havana, said that Guevara March, the third oldest of the Argentine-born revolutionary’s four surviving children, applied for Argentine citizenship in December. She took the Argentine citizenship oath the following month but has kept her Cuban passport, Gomez said.

Many Cubans with ties to the Castro regime have made contingency plans for leaving the country after the longtime leader dies, said Jorge Pinon, a senior researcher with the Institute for Cuban and Cuban-American Studies at the University of Miami.

Castro hasn’t been seen in public for more than a year and didn’t appear at celebrations marking his 81st birthday Monday.