US finds no link between Havana syndrome, foreign power, but two spy agencies say it's possible

US intelligence has found no evidence linking a foreign power to the mysterious "Havana syndrome" injuries reported by some US diplomats and other government personnel, though two agencies now say it remains a possibility.

The conclusion comes from a review conducted by seven different intelligence agencies who examined cases of brain injuries and other symptoms reported by American diplomats and other government personnel who have raised questions about the involvement of a foreign adversary.

The new assessment was released by US intelligence on Friday. Five intelligence agencies in the review concluded that it is very unlikely that a foreign adversary was behind the incidents, according to a US intelligence official who briefed reporters on the findings on condition of anonymity under rules set out by the Office of the Director of National Intelligence.


Two of the agencies, however, reached a different conclusion, finding that there is a possibility that a foreign power may have developed or even used a weapon capable of causing the injuries reported by US diplomats and government officials.

The two agencies, which officials did not identify, did not find evidence linking any specific incident to a foreign technology, but based their findings on understandings of foreign weapon development and capability. One of the agencies found there was a "roughly even chance" that a foreign government used such a weapon or prototype device in a "small, undetermined" number of cases affecting US personnel.

The other agency determined that while it's possible a foreign power has developed such a weapon, it's unlikely that it has been deployed.