Prime Minister Justin Trudeau says Canadians are shocked at the bomb attack in Manchester, which killed 22 people and wounded dozens at a British concert by U.S. singer Ariana Grande in the English city.
Local authorities say they are treating the incident as a terrorist attack.
Ottawa is advising Canadians in the U.K. to avoid the affected area in Manchester. Global Affairs Canada said any Canadians in the English city who require emergency assistance should call toll-free at 00-800-2326-6831.