An intelligence community expert panel concluded the so-called Havana Syndrome could be caused by “pulsed electromagnetic energy,” but it did not weigh in on the possibility a foreign enemy was behind it.

The release of the panel’s executive summary comes weeks after a CIA-led report in January cast doubt on claims a foreign government caused the mysterious phenomenon that has afflicted scores of U.S. diplomats and agents with debilitating symptoms. The panel’s new executive summary included six main findings about Havana Syndrome.

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