A daughter of famed revolutionary Ernesto "Che" Guevara has become an Argentine citizen after decades of living in Cuba, an Argentine official...

BUENOS AIRES, 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 in 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 Guevara March, the third-oldest of the Argentine-born revolutionary’s four surviving children, applied for Argentine citizenship in December. She took the citizenship oath in January but kept her Cuban passport, Gomez said.

Many Cubans with ties to the Castro government 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.

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Castro hasn’t been seen in public for more than a year and didn’t appear at celebrations marking his 81st birthday Monday. Castro reportedly is suffering from diverticulitis, an ailment of the intestines, and has handed over power to younger brother Raul.

Guevara March, a marine biologist, is known as the most private of the Guevara clan and a loyal Castro follower.

“In totalitarian regimes, most everyone associated with that regime has some sort of exit strategy in case the regime changes and all economic livelihood disappears,” Pinon said.

Juan Martin Guevara, one of Ernesto Guevara’s brothers, said he didn’t believe his niece planned to leave Cuba.

“This is a personal matter, not a political one,” Guevara said by telephone from the Argentine capital of Buenos Aires. “Whatever her reasons, it’s to improve her own life and not a reflection on what’s going on in Cuba.”

According to the Argentine newspaper Clarin, which reported Guevara March’s citizenship status Sunday, Guevara March told consular officials she was applying for Argentine citizenship so her two sons could avoid the bureaucratic hassles of traveling with Cuban passports. She also reportedly said she had no plans to leave the communist nation.

An Argentine diplomat, who asked not to be named, said Guevara March hadn’t mentioned her children as the reason for applying for Argentine citizenship. He confirmed that Guevara March said she had no plans to leave Cuba.

Argentine law lets children of Argentines apply for the country’s citizenship, regardless of where they were born. But the diplomat said Guevara March’s children wouldn’t qualify for citizenship because she isn’t a native-born Argentine and they don’t live in Argentina.

Guevara joined Castro’s movement in 1956 when the future Cuban leader was still in exile in Mexico and fought alongside Castro throughout his insurgency. After the 1959 revolution, Guevara lived in Cuba until 1965, when he left to lead unsuccessful insurgencies in the Congo and Bolivia. He was killed by Bolivian troops in 1967.