Is this the sonic weapon sound used to harm US diplomats in Cuba?
Not all Americans injured heard the sound (Picture: Getty Images)

This high-pitched ringing could be the sound that made US diplomats in Cuba mysteriously fall ill.

The alleged attacks, believed to have been carried out at Havana’s American Embassy, led to workers complaining of a range of symptoms including dizziness and trouble sleeping.

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US officials say it was down to a sonic weapon that produced a sound like the one you can hear below.

The recording is not dangerous to listen to. Experts say they know of no sound that can cause physical damage when played for short durations at normal levels.

It’s not clear if diplomats heard exactly this sound, and many who were harmed said they didn’t hear any noise at all, reports AP, which obtained the recording.

Last month, the US State department issued a travel warning urging Americans not to visit Cuba.

This, however, was ignored by tour companies which stressed Cuba is still a safe place to vacate to.

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Greg Geronemus, CEO of SmarTours, said: ‘We continue to believe that Cuba is a safe destination for our travelers, and we will be running our tours until our assessment changes.

‘There has long been significant political tension between the US and Cuban governments, but the experience that our travelers have had on the ground with the Cuban people has been nothing short of amazing. We have no reason to expect that these experiences will not continue.’

Collin Laverty, of Cuba Educational Travel, noted that the US State Department has issued numerous alerts and advisories against travel by Americans to places like Mexico and Europe because of crime, terrorism and other dangers.

Is this the sonic weapon sound used to harm US diplomats in Cuba?
Vacation packages are still being offered by companies despite the travel warning (Picture: Getty)

In contrast, in Cuba, ‘they have no evidence to indicate that US travelers at risk during their visits to Cuba’. He also called the warning ‘absolutely unnecessary and counterproductive’.

A spokesperson for the US State Department said: ‘Over the past several months, numerous U.S. Embassy Havana employees have been targeted in specific attacks.

‘These employees have suffered significant injuries as a consequence of these attacks. Affected individuals have exhibited a range of physical symptoms including ear complaints and hearing loss, dizziness, headache, fatigue, cognitive issues, and difficulty sleeping.’