article_snippet: Canada's Office of the Minister of Public Safety and Emergency Preparedness said: 'Canada's Office of the Minister of Public Safety and Emergency Preparedness are aware of these reports. '
article_snippet: Canada's Office of the Minister of Public Safety and Emergency Preparedness do not comment on operational matters of national security.'
article_snippet: Canada's Office of the Minister of Public Safety and Emergency Preparedness had no immediate comment and a spokesman for the Metropolitan police said a spokesman for the Metropolitan police had the information with his British counterpart - Foreign Secretary Philip Hammond.