Cuba: What theories US investigators are pursuing in attacks

Graphic of diplomats attacked in Cuba by MGN.
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WASHINGTON (AP) - U.S. investigators are chasing many theories about what's harming American diplomats in Cuba -including a sonic attack, electromagnetic weapon or flawed spying device.

Each explanation seems to fit parts of what's happened. But each conflicts with other facts.

Officials say investigators also are pursuing a number of possibilities about the culprit.

They say suspicion has centered on Cuba's government, a rogue faction of its security services or an outsider like Russia. The officials spoke on condition of anonymity because they weren't authorized to discuss the investigation.

The Associated Press also talked to scientists, physicians, and acoustics and weapons experts about the theories.

The incidents started in late 2016 and continued at least until August. At least 21 Americans were harmed, some with permanent hearing loss or mild traumatic brain injury.

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