Cuba's official newspaper has condemned the release from jail of a Cuban-born U.S. intelligence operative who is awaiting trial on immigration fraud charges.

The newspaper Granma credited the release of Luis Posada Carriles to the work of "Miami mafia blackmail" and accused the United States of having double standards in its war on terrorism.

A federal judge in the southern U.S. state of Texas released Posada on a $350,000 bond Friday.

But the judge said the 79-year-old Posada must remain confined to his home in the southern U.S. city of Miami and submit to electronic monitoring.

Federal prosecutors immediately requested he remain jailed while they determine if they can appeal the decision. The prosecutors said Posada could also be arrested by immigration officials who have a deportation order for him.

Posada has been in U.S. custody since 2005, when he was arrested on charges that he illegally entered the country. He is wanted in Cuba and Venezuela on charges of involvement in the deadly bombing of a Cuban jetliner in 1976. Both countries have accused the United States of protecting a terrorist.

A U.S. immigration judge had ruled that Posada be deported. But the judge ordered Posada not be sent to Cuba, where he was born, or Venezuela, where he is a naturalized citizen, because of fears he could be tortured.

Posada has denied any wrongdoing.

Some information for this report was provided by AFP.