MIAMI -- Under growing international pressure, US authorities yesterday seized a Cuban exile accused by Fidel Castro's government of masterminding a 1976 airliner bombing that killed 73 people. He had been seeking asylum in the United States.
Luis Posada Carriles, a 77-year-old former CIA operative and Venezuelan security official, was taken into custody by US immigration authorities, the Homeland Security Department said in a statement.
The department did not say what it planned to do with Posada. Cuban authorities want him to be extradited to Venezuela or to go before an international tribunal. Venezuela is also seeking him.
Generally, the US government does not return people to countries acting on Cuba's behalf, the department said. It has 48 hours to determine his immigration status.
Posada escaped from prison in Venezuela in 1985 while awaiting a prosecutor's appeal of his second acquittal in the bombing of a Cuban jetliner near Barbados. His whereabouts had been unknown until he surfaced in Miami in March and sent word that he was seeking asylum.
The request brought protests from Cuba and put the United States in an awkward position, given the war against terror.
Earlier yesterday, before he was taken into custody, Posada told reporters he was willing to abandon his asylum request and leave the United States for another country. ''If my petition for political asylum created any problem to the government of the United States, I am ready to reconsider my petition," he said. ''My only objective is to fight for the freedom of my country."
US officials seized Posada soon after he emerged from about two months in hiding and granted interviews to TV stations and The Miami Herald.
His attorney, Eduardo Soto, said the asylum request was being refiled because of Posada's arrest. He also questioned the US government's timing.
''It was the US government's preconceived notion to detain him before we withdrew our application for asylum," Soto said. ''You don't need to formally remove a person who wants to leave."
Castro has demanded Posada's arrest by US authorities for his alleged role in the airliner bombing and other anti-Castro violence. That demand was echoed by thousands in protests yesterday in Havana.
Cuba's parliament speaker, Ricardo Alarcon, said after Posada's detainment that the Cuban government will wait to see if President Bush ''lives up to his rhetoric or if they help an old friend."
Venezuela recently approved an extradition request, and Castro has made numerous speeches calling Posada a terrorist and accusing the United States of a double standard on terror. The United States and Venezuela have an extradition treaty.
''The majority of Americans would never be in favor of harboring a terrorist," said Wayne Smith, a former US envoy to Cuba who now heads the Cuba program at the Washington-based Center for International Policy.
Posada and three others were pardoned last August by Panama's president for their role in an alleged assassination plot in 2000 against Castro during a conference in Panama. Posada was also connected to a series of 1997 bombings of tourist sites in Cuba, one of which killed an Italian tourist.
In an interview in yesterday's Miami Herald, Posada denied any involvement in the airliner bombing but refused to confirm or deny involvement in other attacks, telling the newspaper: ''Let's leave it to history."
''I feel that I've committed many errors, more than most people," he said. ''But I've always believed in rebellion, in the armed struggle. I believe more and more every day that we will triumph against Castro. Victory will be ours."
He has said he entered the United States through Mexico and came to Miami on a bus.