An apparent acoustic attack on a USAID officer at the American embassy in Uzbekistan has raised suspicions that Russia may have been involved in similar attacks targeting US diplomats in Cuba, a new report said Tuesday.

The officer and his wife reported the attack in September, and sources said it mirrored the attacks in Havana, which began in November 2016, CBS News reported.

The victims of the Cuban attacks reported hearing a loud, high-pitched sound in their homes and elsewhere. They suffered brain injuries, hearing loss and other issues.

The USAID officer and his wife reported hearing sounds that were similar and State flew them out of Tashkent for evaluation.

‎The State Department had little to say about the incident.

”We take seriously the health concerns of USG personnel anywhere in the world. We ensure our personnel are examined and receive appropriate treatment,” the spokesman told CBS.

“We can confirm that no personnel at the US Embassy in Uzbekistan have been diagnosed with the conditions that have been observed in Cuba.”

Uzbekistan was once part of the Soviet Union, and still maintains a close relationship with Vladimir Putin’s Russia.

Russian Foreign Ministry spokeswoman Maria Zakharova called suggestions that Russia was involved “absurd,” adding that “this does not help the normalization of the bilateral relations” between the US

and Russia.