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WASHINGTON — The Latest on the U.S. investigation into health attacks on the American diplomatic community in Havana (all times local):

7:15 p.m.

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A Canadian government official says his country first learned in March that a Canadian was affected by health attacks that have harmed U.S. diplomats in Cuba.

The official wasn’t authorized to speak publicly and spoke on condition of anonymity.

The Canadian government previously confirmed at least one Canadian diplomat was involved and said it was aware of unusual symptoms affecting Canadian and U.S. diplomatic personnel and their families in Havana. Canada officials are actively working with U.S. and Cuban authorities to ascertain the cause.

Canada has long had friendly ties with Cuba. But former Canadian Ambassador to Cuba James Bartleman says during his 1981-83 tour in Havana, he and his staff were targets of a string of mysterious attacks. Bartleman says his dog was poisoned.