The U.S. has still to explain the secret “Cuban Twitter” network it operated in Costa Rica, said President Luis Guillermo Solís on Thursday.

c-zunzuneoSolís told the media that his administration will file another request of the United States government to clarify the circumstances surrounding the social media program.

The Associated Press detailed in an investigation last month how U.S. officials developed in Costa Rica the ZunZuneo online social networking and microblogging service marketed to Cuban users,  as a way to undermine Cuba’s government. The network was created under the U.S. Agency for International Development, but its users in Cuba were unaware it was backed by the U.S. government.

President Solís said that Costa Rica was never informed of the project. The Chinchilla administration that preceded Solís previously asked the U.S. to explain the details uncovered by the Associated Press in how far the ZunZuneo went to hide its ties to the U.S., using foreign companies and computer servers paid for via bank account in the Cayman islands.

“I find it regrettable that Costa Rica was used as a platform for such acts without proper notification to its government,” he said.

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