HAVANA, June 10 (Xinhua) -- Cuba's Ministry of Foreign Affairs reiterated on Sunday the lack of evidence related to the alleged sonic attacks suffered by American diplomats in the Caribbean nation.

In an official statement, the ministry disclosed that on May 29, the U.S. Embassy in Havana reported one of its officials showed symptoms from "undefined sounds" in her residence.

According to sources, the Cuban government attached great importance to the issue and asked the U.S. side to allow specialized doctors to see the official.

The incident added to a string of alleged damage suffered by over 20 U.S. officials and their families in Cuba after "acoustic attacks."

As in previous cases, Cuban authorities and specialists were not granted access to the official, highlighted the statement.

"During the exhaustive and urgent investigation carried out in the vicinity of the residence of the official, no evidence was found of any sound that could cause damage to health," read the statement.

"Cuba has publicly and officially reiterated its willingness to cooperate seriously in the joint search for answers, clarification and the solution to the alleged facts," said the ministry.

The U.S. government has drastically reduced its personnel in the island nation and expelled Cuban diplomats from the United States, besides issuing travel alerts against Cuba.

The Cuban government has said that, after more than a year of investigations, there are no scientific conclusions to justify the actions taken by the White House to the detriment of bilateral relations.