‘Sonic attacks’ at embassy in Cuba WERE caused by insects

‘Sonic attacks’ in Cuba WERE caused by insects: Mysterious high-pitched sound which altered brains of embassy staff in Havana was a cricket not a weapon, U.S. scientist finds

  • Medical experts said the sounds had caused changes in the brains of diplomats
  • Washington withdrew some diplomatic staff after claims of a ‘deliberate attack’  
  • The new finding by a Berkeley scientist backs up the Cuban government’s denial

A mysterious sound heard by diplomats at the U.S. embassy in Cuba was caused by insects and not a secret sonic weapon, a researcher has found. 

The finding by a scientist at the University of California, Berkeley, supports the claims by the Cuban government after the diplomatic row erupted in 2017. 

Medical experts said at the time the sounds had caused changes in the brains of American and Canadian diplomats, prompting fears of a sonic attack in Havana. 

Then-U.S. Secretary of State Rex Tillerson suggested it was a ‘deliberate attack’ and numerous American diplomatic staff were withdrawn. 

A mysterious sound heard by diplomats at the U.S. embassy in Cuba (pictured) was caused by insects and not a secret sonic weapon, a researcher has found

But Cuban scientists rejected the claims, suggesting that crickets may have caused the sounds.  

The latest research by Alexander Stubbs has suggested Cuba’s alternative explanation was correct. 

Stubbs said: ‘Beginning in late 2016, diplomats posted to the United States embassy in Cuba began to experience unexplained health problems including ear pain, tinnitus, vertigo, and cognitive difficulties which reportedly began after they heard strange noises in their homes or hotel rooms.

‘The sound linked to these attacks, which has been described as a high-pitched beam of sound, was recorded by U.S. personnel in Cuba.

‘The calling song of the Indies short-tailed cricket (Anurogryllus celerinictus) matches, in nuanced detail, the recording.  


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‘The recording also exhibits frequency decay in individual pulses, a distinct acoustic signature of cricket sound production. 

‘This provides strong evidence that an echoing cricket call, rather than a sonic attack or other technological device, is responsible for the sound in the released recording.’  

Stubbs is presenting his study to the Annual Meeting of the Society for Integrative and Comparative Biology.  

Medical testing revealed the embassy workers developed changes to the white matter tracts.

These regions act like information highways between brain cells letting different parts of the brain communicate. 

A scientist at the University of California, Berkeley, has found that the sound of a cricket (stock image) may have been responsible, backing up the claims by the Cuban government

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