File Photo: U.S. President Donald Trump speaks on new Iran strategy at the White House in Washington D.C., the United States, on Oct. 13, 2017. (Xinhua/Ting Shen)

WASHINGTON, Oct. 16 (Xinhua) -- U.S. President Donald Trump said here on Monday that he believed Cuba shall be responsible for the illness of the U.S. diplomats working in the island country.

However, the U.S. top leader did not provide any details or evidences supporting his accusation.

Earlier on Oct. 3, Washington announced it has asked for the departure of 15 Cuban diplomats from the Cuban embassy in Washington in the wake of mysterious "sonic attacks" that led to the recall of more than half of U.S. embassy staff in Havana.

According to the U.S. State Department, the attacks have caused health problems in 22 American diplomats and intelligence personnel.

Rejecting any responsibilities in the incidents, Cuba said the U.S. withdrawal of its diplomatic personnel is a "hasty decision" that will affect bilateral relations, and its expelling of Cuban diplomats "unacceptable."