Behind the scenes, though, investigators immediately started searching for explanations in the darker, rougher world of spycraft and counterespionage, given that so many of the first reported cases involved intelligence workers posted to the U.S. embassy. That revelation, confirmed to the AP by a half-dozen officials, adds yet another element of mystery to a year-long saga that the Trump administration says may not be over.
The State Department and the CIA declined to comment for this story.
https://apnews.com/d0fa8db258bf4c549...etwork-in-Cuba