New intelligence about weapons research by American adversaries opens the possibility of a foreign actor behind the mysterious ailments that have injured hundreds of U.S. personnel serving overseas.

A report from the intelligence community released Friday maintains its conclusion that a foreign adversary is not behind the mysterious ailments plaguing government workers, but it opened the door

A majority of U.S. intelligence agencies have reaffirmed in an updated assessment that it is "very unlikely" that a foreign adversary was responsible for so-called Havana Syndrome ailments, a U.S. intelligence official said on Friday.