The first public recording of the "sonic attacks," which affected at least 22 Americans at the U.S. embassy in Cuba, was released Thursday, according to Fox News.
The sounds, which mimics "high-pitched, cricket-like sounds," is one of several sounds that initially led U.S. investigators to believe American and Canadian diplomats and their families were attacked by a sonic weapon of sorts, the report states. Affected individuals reportedly began experiencing various illnesses in December 2016. The victims' injuries ranged from hearing loss and dizziness to visual problems and cognitive issues, among other conditions.
Not every American affected by the unknown health attacks reported hearing the sounds. However, those who did said the publicly released recording was similar to what they heard, according to the report. Some U.S. tourists have also reportedly told government officials they have heard similar sounds, the report states.
Federal officials reportedly sent the recording to the U.S. Navy for further examination. Officials also shared the recording with the remaining staff at the embassy in Cuba to teach them what to listen for.
U.S. officials advised those hearing the sounds to immediately move to another area, as officials believe the attack will most likely not follow them, the report states.
Prior to the release of the recording, President Donald Trump took several measures to protect Americans from further attacks.The Trump administration expelled 15 Cuban diplomats from the country's embassy in Washington, D.C., Oct. 3, and issued a travel warning advising American citizens not to travel to Cuba.
The cause of the attacks has not yet been determined. However, White House officials reportedly do not believe the Cuban government is behind the attacks.
To hear a short clip of the sound, click here.