Security has been tightened for all transportation systems across Canada in the wake of the British attacks, Canada's Public Safety Minister Anne McLellan said Thursday.
Four explosions rocked the London subway and tore open a packed double-decker bus during the morning rush hour Thursday, at least 40 people were killed and 700 injured.
"There is no specific threat to Canada or Canadians at this time, but you have to be prepared, you have to take all precautionary measures," McLellan told reporters in Edmonton, capital of Canada's western province of Alberta.
Canadian Prime Minister Paul Martin, who is in Scotland attending the Group of Eight summit, issued a statement Thursday condemning the explosion in London and pledged full support for a war on terror.
There have been no reports of Canadian casualities in the attacks in London.