Multiple Canadian airports faced bomb threats Thursday morning that grounded flights and are expected to cause widespread delays, according to air traffic control manager Nav Canada."Early this morning,

Operations at Canadian airports impacted by bomb threats have resumed operations. On Thurs 3, NAV Canada was made aware of bomb threats affecting facilities in Ottawa, Montreal, Edmonton, Winnipeg, Calgary and Vancouver,

The threats affected facilities in Calgary, Ottawa, Montreal, Edmonton, Winnipeg and Vancouver, according to a social media post by Nav Canada, the country’s air-traffic authority, which instituted a temporary ground stop.