Producers Michael Rey and Oriana Zill de Granados say their five-year 60 Minutes investigation expanded from embassy complaints in Havana in 2016 into a global review of more than 1,000 reported incidents attributed to “Havana Syndrome.” Their reporting traces victims from Cuba to China and the United States, follows competing scientific theories, and — according to the producers and one source — uncovered a document one source described as “a receipt” that may tie testing of an acoustic or directed-energy device to a Russian intelligence unit.
Scope and victims’ accounts
The investigation compiles accounts from diplomats, consular staff and other government employees who reported abrupt symptoms including severe headaches, pressure in the temples, dizziness, balance and walking problems, and memory and cognitive difficulties. Several victims reported hearing unusual sounds before developing symptoms; in some accounts the noise was loud and persistent.
Among those interviewed: Mark Lenzi, a State Department security officer formerly posted in Guangzhou, China, who said he was struck repeatedly and believed he was targeted because of his work on electronic threats to diplomatic missions. Robyn Garfield, a Commerce Department official, told investigators of incidents affecting him and his children in China and of a later suspected event in the U.S.; he described hearing a “distinct sound” near his children’s heads and seeing them thrash while asleep.
Scientific theories and debate
Some researchers have proposed high-power microwaves or radio-frequency (RF) energy in the microwave band as plausible mechanisms. Physicist James Benford noted microwaves’ ability to penetrate glass and pointed out such technologies have been developed in several countries, including the U.S., Russia and China. Victims and some scientists argue that patterns and severity of symptoms are consistent with directed-energy exposure.
Other scientists and elements of the intelligence community caution that the incidents are heterogeneous, may have multiple causes, and lack a single, consistent physical signature linking them to one mechanism or foreign state.
Intelligence community assessments
A 2021 CIA interim assessment did not find evidence of a coordinated worldwide campaign by a foreign adversary. The director of national intelligence later described it as “very unlikely a foreign adversary is responsible,” and CIA Director William Burns and other officials have said the intelligence community has not connected all the incidents or identified a single cause.
What the 60 Minutes reporting says it found
Investigative journalist Christo Grozev located an email the producers say documents empirical tests of a directed-energy or acoustic device by members of Russian unit 29155. Rey and de Granados describe that message as “the closest to a receipt you can have” tying a Russian intelligence unit to testing, and say the material challenges the public intelligence assessments that downplay a foreign-adversary explanation.
Context, reactions and purpose
The reporting spans interviews with affected people, agency officials, independent scientists and investigative specialists, and documents victims’ frustration at being dismissed and their difficulty obtaining care or recognition. U.S. intelligence officials maintain no conclusive evidence connects a state actor to all incidents and emphasize the pattern’s complexity. The producers say their role is to publish source material, highlight unresolved questions and press agencies to explain what evidence they have and how they reached their conclusions.
The investigation contributes to an ongoing public and scientific debate over causes, responses for affected people, and whether foreign services have developed or tested unconventional capabilities against U.S. personnel.