WASHINGTON — This much is known about the Cuban man who spied for the United States and was released Wednesday in a historic prisoner swap: He had access to closely held intelligence information at the highest levels of the Cuban government.
His information was so good, officials said Wednesday, that it helped American authorities ferret out a number of Cuban spies in the United States, including two senior U.S. government officers who were among Cuba's most prolific operatives.
The spy, whom American officials declined to name, spent nearly 20 years in prison after he was caught.
President Barrack Obama said his "sacrifice has been known to only a few," and called him "one of the most important intelligence agents that the United States has ever had in Cuba."
The man is now "safely on our shores," Obama said, along with Alan Gross, the American aid contractor also released Wednesday. Their swap came as Obama and Cuban President Raul Castro announced steps to fully normalize relations between their countries.
Officials said many details about the spy in Cuba remain classified.
According to Brian Hale, spokesman for the director of national intelligence, the spy's information helped lead to the prosecution of Ana Belen Montes, a former senior Defense Intelligence Agency analyst who is serving a life sentence after spying for Cuba for 17 years; and former State Department official Walter Kendall Myers, serving life after spying for three decades.
"I think this is a tremendous gain for the intelligence community," said Fran Townsend, a former senior national security official in the George W. Bush administration. "This was a very productive asset who was well placed, trusted by the Cuban government and helped us in a number of ways."