(Reuters) - Canadian police and intelligence agencies will announce multiple arrests on Monday after an operation to thwart a "major terrorist attack," the Canadian Broadcasting Corporation reported, citing unidentified "highly placed" sources.
The Royal Canadian Mounted Police said in a statement that they would provide details about a "national security criminal investigation" at a news conference at 3:30 p.m. ET
The statement, which gave no details of arrests, said security forces had conducted joint operations in Toronto and in Montreal, Canada's two biggest cities.
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