Cuba has freed some of the 53 political prisoners identified on a US list as it moves towards normalising ties with the United States, an American official says.
"They have already released some of the prisoners," State Department spokeswoman Jen Psaki told reporters on Tuesday.
"Obviously we would like to see this completed in the near future."
She refused, however, to specify how many people were freed.
Last month US President Barack Obama signalled a historic shift in US ties with Cuba, ordering his administration to initiate steps to normalise relations.
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The State Department must also study the prospects of lifting communist-run Cuba from the list of states that sponsor terrorism.
Obama also wants to eventually gain cooperation from Congress in lifting the 54-year-old US trade embargo on Cuba which he has described as "self-defeating."
As part of the deal, Washington has presented a "carefully put together" list of 53 political prisoners which the United States would like to see freed by Havana, Psaki said.
Senior officials from both countries are due to meet to start the process of normalising ties in Havana later in January. An exact date has not been set.
