At least eight of the original Havana syndrome cases reported by diplomats in Cuba were caused by crickets and a mass “psychogenic” effect, according to a newly declassified report.
The findings cover more than a third of the original 21 incidents, according to the report, which was produced by the department’s JASON advisory group. The report, originally classified as “secret,” was declassified and obtained by BuzzFeed News, which published it on Thursday.
“No plausible single source of energy (neither radio/microwaves nor sonic) can produce both the recorded audio/video signals and the reported medical effects,” researchers said in the report. “We believe the recorded sounds are mechanical or biological in origin, rather than electronic. The most likely source is the Indies short-tailed cricket.”