Over the last 24 hours, reports are coming down the grapevine claiming that five USA diplomats and at least one Canadian envoy have fallen ill, all suffering from acute hearing loss, headaches, and nausea.
According to Justin Trudeau's government sources, it was not only his diplomat who suffered "unusual symptoms" on his trip to Cuba, his family was also affected during his stay on the Caribbean island, reporting hearing loss and migraine headaches.
The allegations prompted the U.S.to eject two Cuban diplomats from Washington, drawing a strong denial from Havana that anyone targeted Americans with a covert device. Trump has promised to dial back the US trade detente with Cuba.
The US government has attributed these physical symptoms reported by its diplomatic corps, to an "acoustic attack" with "sound devices", which made them lose their hearing.
The US embassy employees suffered symptoms resembling concussions and have since then traveled to the US for treatment.
Cuba's foreign ministry said United States officials had alerted it to "some alleged incidents affecting some officials of that diplomatic mission and their families" on February 17.
The statement from the Cuban Foreign Ministry said it had been informed of the incidents on February 17 and had launched an "exhaustive, high-priority, urgent investigation at the behest of the highest level of the Cuban government".
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The Cuban government said it "has never permitted, nor will permit, that Cuban territory be used for any action against accredited diplomatic officials or their families, with no exception".
Despite Cuba's assertion that there has never been action taken against diplomats on Cuban soil, experts say such tactics as harassing Americans were common before the USA and Cuba re-established diplomatic ties two years ago.
Several American diplomats who had been stationed in Cuba were forced to cut their tours of duty short and return home a year ago after suddenly and inexplicably losing their hearing.
About five diplomats, several with spouses, were affected, the AP said.
Canada is not at the point where it is ready to take reprisals, since the investigation is continuing and it is too early to conclude the Cuban government was behind the incidents. It was not immediately clear if the device was a weapon used in a deliberate attack, or had some other goal. Several of the diplomats were recent arrivals at the embassy, which reopened in 2015 as part of President Barack Obama's reestablishment of diplomatic relations with Cuba.
Investigators are looking into the possibility that the incidents were carried out by a third country, officials familiar with the probe told AP.
But there are no known cases of such a device being deployed by hostile intelligence services or terrorists against a diplomatic mission.