US intelligence community report says 'pulsed electromagnetic energy' could cause Havana Syndrome

An intelligence panel investigating the cause of a spate of mysterious incidents that have struck dozens of US officials across the globe has said that some of the episodes could "plausibly" have been caused by "pulsed electromagnetic energy" emitted by an external source, according to an executive summary of the panel's findings released Wednesday.

But the panel stopped short of making a definitive determination, saying only that both electromagnetic energy and, in limited circumstances, ultrasound could explain the key symptoms -- highlighting the degree to which the murky illness known colloquially as "Havana Syndrome" has remained one of the intelligence community's most stubborn mysteries.

"We've learned a lot," an intelligence official familiar with the panel's work told reporters, speaking on anonymity under terms set by the Office of the Director of National Intelligence. "While we don't have the specific mechanism for each case, what we do know is if you report quickly and promptly get medical care, most people are getting well."