Thee Cuban intelligence agents have been given heroes' welcomes as they landed back in their homeland after 16 years in prison in the US.
It comes as US President Barack Obama announced his country will restore diplomatic relations it severed with Cuba more than 50 years ago.
As part of a prisoner swap under the new policy, Cuba freed American Alan Gross in exchange for the three Cubans held by the United States.
Three Cuban intelligence agents who had served 16 years in U.S. jails have returned to Cuba.
They were released as part of a prisoner exchange in which Cuba freed an American foreign aid worker who had served five years in a Cuban prison, President Raul Castro said.
Castro said he spoke with U.S. President Barack Obama by telephone on Tuesday ahead of the announcement that the United States would be moving to normalise relations between the two countries.
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.